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Impurities
Home
Products
Impurities
Impurities
Sr No.
Name of Impurity/Ref Standards
Structure
CAS No.
Enquiry
A)
Apixaban
1
Apixaban Reference Standard
503612-47-3
2
1-(4-iodophenyl)-3-morpholino-5,6-dihydropyridin-2(1H)-one
473927-69-4
3
Ethyl chloro[(4-methoxyphenyl)hydrazono]acetate
27143-07-3
4
Morpholine
110-91-8
5
Valerolactum
675-20-7
6
Ethyl 1-(4-methoxyphenyl)-7-oxo-6-(4-(2-oxopiperidin-1-yl)phenyl)-4,5,6,7-tetrahydro-1H-pyrazolo[3,4-c]pyridine-3-carboxylate
503614-91-3
7
1-(4-Methoxyphenyl)-7-oxo-6-(4-(2-oxopiperidin-1-yl)phenyl)-4,5,6,7-tetrahydro-1H-pyrazolo[3,4-c]pyridine-3-carboxylic acid
503614-91-3
B)
Anagliptin hydrochloride
1
2-methylpyrazolo[1,5-a]pyrimidine-6-carboxylic acid
739364-95-5
2
2-(Boc-oxyimino)-2-phenylacetonitrile
58632-95-4
3
(2S)-1-(Chloroacetyl)-2-pyrrolidinecarbonitrile
207557-35-5
4
2-Amino-2-methylpropanenitrile
19355-69-2
C)
Azilsartan Kmedoxomil
1
Azilsartan medoxomil
863031-21-4
2
Methyl 1-((2'-cyano-[1,1'-biphenyl]-4-yl)methyl)-2-ethoxy-1Hbenzo[d]imidazole-7-carboxylate
139481-44-0
3
3-[(4-{2-[(Z)-N'-hydroxycarbamimidoyl]phenyl}phenyl)methyl]-2-oxo-2,3-dihydro-1H-1,3-benzodiazole-4-carboxylic acid
1821386-21-3
4
methyl 3-((2'-cyanobiphenyl-4-yl)methyl)-2-oxo-2,3-dihydro-1Hbenzo[d]imidazole-4-carboxylate(Impurity I)
139481-33-7
5
methyl 1-((2'-carbamoyl-[1,1'-biphenyl]-4-yl)methyl)-2-ethoxy-1H-benzo[d]imidazole-7-carboxylate(Impurity A)
147404-76-0
6
(Z)-2-ethoxy-1-((2'-(N'-hydroxycarbamimidoyl)-[1,1'-biphenyl]-4-yl)methyl)-1Hbenzo[d]imidazole-7-carboxylic acid(Impurity C)
1397836-49-5
7
methyl 2-ethoxy-1-((2'-(5-oxo-4,5-dihydro-1,2,4-oxadiazol-3-yl)-[1,1'-biphenyl]-4-yl)methyl)-1Hbenzo[d]imidazole-7-carboxylate(Azilsartan methyl ester)
147403-52-9
8
2-oxo-3-((2'-(5-oxo-4,5-dihydro-1,2,4-oxadiazol-3-yl)-[1,1'-biphenyl]-4-yl)methyl)-2,3-dihydro-1H-benzo[d]imidazole-4-carboxylicacid(Impurity K)
1442400-68-1
9
methyl (Z)-2-ethoxy-1-((2'-(N'-hydroxycarbamimidoyl)-[1,1'-biphenyl]-4-yl)methyl)-1Hbenzo[d]imidazole-7-carboxylate(Impurity 2)
147403-65-4
10
2-Ethoxy-1-[[2’-(4,5-dihydro-5-oxo-1,2,4-oxadiazol-3-yl)biphenyl-4-yl]methyl]benzimidazole-7-carboxylic Acid(Azilsartan Acid)
147403-03-0
11
methyl 1-((2'-carbamoyl-[1,1'-biphenyl]-4-yl)methyl)-2-ethoxy-1H-benzo[d]imidazole-7-carboxylate(Impurity A)
1474404-76-0
12
1-((2'-cyano-[1,1'-biphenyl]-4-yl)methyl)-2-ethoxy-1Hbenzo[d]imidazole-7-carboxylic acid(Impurity M)
632322-61-3
13
(Z)-2-ethoxy-1-((2'-(N'-hydroxycarbamimidoyl)-[1,1'-biphenyl]-4-yl)methyl)-1Hbenzo[d]imidazole-7-carboxylic acid(Impurity C)
1397836-49-5
14
methyl (Z)-3-((2'-(N'-hydroxycarbamimidoyl)-[1,1'-biphenyl]-4-yl)methyl)-2-oxo-2,3-dihydro-1H-benzo[d]imidazole-4-carboxylate(Impurity H)
1499167-72-4
15
methyl 2-oxo-3-((2'-(5-oxo-4,5-dihydro-1,2,4-oxadiazol-3-yl)-[1,1'-biphenyl]-4-yl)methyl)-2,3-dihydro-1H-benzo[d]imidazole-4-carboxylate(Impurity J)
1403474-78-1
D)
Abiraterone
1
3β-Hydroxy-5-androsten-17-one, 5-Androsten-3β-ol-17-one(Impurity A)
53-43-0
2
3-β-Acetoxy-5-androsten-17-one(Impurity B)
853-23-6
3
17-Iodoandrosta-5,16-dien-3β-ol(Impurity C)
32138-69-5
4
Abiraterone Pregnenolone-16-ene Acetate(Impurity D)
979-02-2
E)
Bupropion
1
2-bromo-3’-chloropropiophenone
34911-51-8
2
2-amino-1-(3-chlorophenyl)propan-1-one
119802-69-6
3
3-chloropropiophenone
34841-35-5
4
1-(3-chlorophenyl)-1,2-propanedione
10557-17-2
F)
Bupivacaine
1
2,6-Dimethylaniline hydrochloride(Impurity F)
21436-98-6
2
N-(2,6-Dimethylphenyl)-2-Picolinamide (Impurity A)
39627-98-0
3
(+)-Bupicaine HCl Reference Standard
27262-46-0
G)
Ciprofloxacin
1
7-Chloro-1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxoquinoline-3-carboxylic Acid
86393-33-1
2
Ciprofloxacin N-Formyl Impurity
93594-39-9
H)
Cilastatin Sodium
1
L-cysteine hydrochloride monohydrate
7048-04-6
2
(S)-(+)-2,2-dimethylcyclopropane carbamide
75885-58-4
3
7-Chloro-2-[[[(1S)-2,2-dimethylcyclopropyl]carbonyl]amin o]-2-heptenoic acid
877674-77-6
4
Cilastatin Sodium Reference Standard
81129-83-1
I)
Cinacalcet
1
(S)-Cinacalcet Reference Standard
694495-47-1
2
Cinacalcet N-Oxide
473927-69-4
J)
Diphenhydramine HCL
1
2-Diphenylmethoxy-N,Ndimethylethylamine Hydrochloride RS
147-24-0
2
N-DesMethyl Diphenhydramine Hydrochloride(Impurity A)
53499-40-4
3
4-Methyl diphenhydramine(Toladryl,)
19804-27-4
4
4-Methyl diphenhydramine HCl
4024-34-4
5
4-bromo diphenhydramine hydrochloride
1808-12-4
6
Diphenhydramine N-Oxide Impurity
3922-74-5
7
Diphenyl Chloromethane
90-99-3
8
Diphenyl methanol
91-01-0
9
Benzophenone DPH Impurity
119-61-9
10
N,N-Dimethylethanolamine
108-01-0
K)
Diclofenac Sodium
1
Diclofenac Ethyl Ester
15307-77-4
2
1-(2,6-Dichlorophenyl)-2-oxoindoline (Impurity A)
15362-40-0
3
2-(2,6-Dichloroanilino)benzaldehyde(Impurity B)
22121-58-0
4
o-(2,6-dichloroanilino)benzyl Alcohol (Impurity C)
27204-57-5
5
2-Indolinone (Impurity E)
59-48-3
6
2,6-Dichloro-N-(4-chlorophenyl)-benzeneacetamide (Impurity F)
560075-65-2
7
Diclofenac Isopropyl Ester
66370-79-4
L)
Dacalatasvir hydrochloride
1
4,4'-Diacetylbiphenyl
787-69-9
2
4,4'-Bis(bromoacetyl)biphenyl
4072-67-7
3
4,4'-Bis(2-((S)-pyrrolidin-2-yl)-1H-imidazol-5-yl)-1,1'-biphenyl tetrahydrochloride
1009119-83-8
4
Daclatasvir dihydrochloride Reference Standard
1009119-65-6
5
(2S,2'S)-Di-tert-butyl 2,2'-(5,5'-([1,1'-biphenyl]-4,4'-diyl)bis(1Himidazole-5,2-diyl))bis(pyrrolidine-1-carboxylate)
1007882-23-6
6
1,2-Pyrrolidinedicarboxylic acid,2,2'-[[1,1'-biphenyl]-4,4'-diylbis(2-oxo-2,1-ethanediyl)]bis[1-(1,1-dimethylethyl)] ester,(2S)-
1009119-82-7
M)
Gabapentin
1
4,4-pentamethylene-2-pyrrolidone (Impurity A)
64744-50-9
2
1-[(3-Oxo-2-azaspiro[4.5]dec-2-yl)methyl]cyclohexaneacetic acid (Impurity D)
1076198-17-8
3
Gabapentin Reference Standard
60142-96-3
4
(1-Cyanocyclohexyl) acetic acid,1-Cyanocyclohexaneacetic acid Gabapentin Impurity B
133481-09-1
5
1-Carboxycyclohexaneacetic Acid (Impurity E)
667465-00-1
N)
Glimepiride
1
Glimepiride Reference Standard
93479-97-1
2
[4-[2-(3-Ethyl-4-methyl-2-oxo-3-pyrroline-1-carboxamido) ethyl] phenyl] sulfonamide
119018-29-0
3
3-ethyl-4-methyl-2-oxo-Nphenethyl-2,5-dihydro-1H-pyrrole-1-carboxamide ; 4-[2-[(3-Ethyl-4-methyl-2-oxo-3-pyrrolin-1-yl)carboxamido]ethyl]benzene
247098-18-6
O)
Febuxastat
1
4-hydroxybenzoic acid (impurity-1)
99-96-7
2
4-hydroxybenzonitrile (Impurity-2)
767-00-0
3
Ethyl-2-chloro acetoacetate (RMImpurity)
609-15-4
4
4-hydroxybenzenecarbothioamide
25984-63-8
5
Ethyl-2-(4-hydrxyphenyl)-4-methyl-1,3-thiazole-5-carboxylate
161797-99-5
6
Ethyl-2-(3-formyl-4-hydroxyphenyl)-4-methyl-1,3-thiazole-5-carboxylate
161798-01-2
7
Ethyl 2-[3-formyl-4-(2-methyl propoxy) phenyl]-4-methyl -1,3-thiazole-5-carboxylate (Impurity G)
161798-03-4
8
Ethyl 2-[3-cyano-4-(2-methyl propoxy) phenyl]-4-methyl- 1,3-thiazole-5-carboxylate (Impurity 3)
160844-75-7
9
2-[3-carbamoyl-4-(2-methylpropoxy)phenyl]-4-methyl-1,3-thiazole-5-carboxylic acid (Impurity D)
1239233-86-3
10
ethyl 2-(3-cyano-4-isobutoxyphenyl)-4-methylthiazole-5-carboxylate
144060-97-9
11
2-(4-Isobutoxyphenyl)-4-methylthiazole-5-carboxylic acid (Descyano Impurity)
1206550-99-3
12
Ethyl 2-[3-cyano-4-hydroxy phenyl]-4-methyl-1,3-thiazole-5-carboxylate (Impurity 5)
161798-02-3
13
Febuxastat Reference Standard
144060-53-7
14
Febuxostat diacid impurity
1239233-87-4
15
Febuxastat diethyl ester (DEE)Impurity
1643131-93-4
16
Febuxastat Acid ester Impurity
2095166-41-7
P)
Hydralazine HCl
1
Phthalazine (Impurity A)
253-52-1
2
2-Formyl benzoic acid (Impurity B)
119-67-5
3
1-(2H) Phthalazinone (Impurity C)
119-39-1
4
1-Chloro Phthalazine (Impurity 2)
5784-45-2
5
2,3-dihydro-1,4-phthalazinedione
1445-69-8
6
1,2-diphthalazin-1-ylhydrazine (Impurity F, Dimer Impurity)
24030-07-7
7
Hydralazine hydrochloride Reference Standard
304-20-1
8
3-bromo-3H-2-benzofuran-1-one
6940-49-4
9
1-Isobenzofuranone
87-41-2
10
Hydralazine Free base Reference Standard
86-54-4
Q)
Ibuprofen
1
2-(4-butylphenyl) propanoic acid (Impurity B)
3585-49-7
2
2-(4-Methylphenyl) Propanoic acid (Impurity D)
938-94-3
3
1-[4-(2-methylpropyl) phenyl]ethanone (Impurity E)
586-89-0
4
Ibuprofen Propyl Analogue
3585-47-5
R)
Linagliptin
1
8-bromo-3-methyl-3,7-dihydro-1Hpurine-2,6-dione
93703-24-3
2
3-Methyl-3,7-Dihydro-1H-Purine-2,6-Dion
1076-22-8
3
1-bromobut-2-yne
3355-28-0
4
8-bromo-7-(but-2-yn-1-yl)-3-methyl-3,7-dihydro-1H-purine-2,6-dione (Intermediate Reference Standard)
666819-98-4
5
2-(Chloromethyl)-4-methylquinazoline (Intermediate Reference Standard)
109113-72-6
6
8-Bromo-7-but-2-ynyl-3-methyl-1-(4-methyl-quinazolin-2-ylmethyl)-3,7-dihydro-purine-2,6-dione(Intermediate F Reference Standard)
853029-57-9
7
Tert-butyl (3R)-piperidin-3-ylcarbamate
309956-78-3
8
Chloro cyano methane
107-14-3
9
Tert-butyl (3S)-piperidin-3-ylcarbamate
216854-23-8
S)
Lercanidipine hydrochloride
1
Lercanidipine hydrochloride RS
132866-11-6
2
Dehydro Lercanidipine HCl
887769-34-8
3
1,4-Dihydro-2,6-dimethyl-4-(3-nitrophenyl)-3,5-pyridinedicarboxylic Acid 3,5-Dimethyl Ester
21881-77-6
4
2-hydroxy-N-(3,3-diphenylpropyl)-N,2-dimethylpropan-1-amine
100442-33-9
5
2-chloro-N-(3,3-diphenylpropyl)-N,2-dimethylpropan-1-amine
936491-32-6
T)
Metoprolol
1
Benzaldehyde,4-(2-oxiranylmethoxy)
14697-49-5
2
Glycidyl phenyl ether
122-60-1
3
4-(3-chloro-2-hydroxypropoxy)Benzaldehyde
62911-12-0
4
Metoprolol Impurity M (FB)
343785-33-1
5
Metoprolol EP Impurity M (HCl)
73313-36-7
6
Metoprolol EP Impurity F
7695-63-8
7
P-(2-Methoxyethyl)anisole
80314-58-5
8
1-(2-Methoxyethyl)-4-nitrobenzene
69628-98-4
9
4-(2-Methoxyethyl)benzenamine
84803-56-5
10
Metoprolol Epoxide
56718-70-8
11
Metoprolol Related Compound B
56718-76-4
U)
Macitentan
1
Macitentan Dimer Impurity
2089065-77-8
2
Macitentan Reference Standard
441798-33-0
3
N-[5-(4-Bromophenyl)-6-[2-[(5-bromo-2-pyrimidinyl)-oxy]-ethoxy]-4-pyrimidinyl]-sulfamide.
1103522-45-7
4
(4-Bromo-phenyl)-6-[2-(5-bromopyrimidin-2-yloxy)-ethoxy]-pyrimidin-4-ylamine
1433875-21-8
V)
Metformin Hydrochloride
1
Dicyandiamide(Impurity A)
461-58-5
2
(4,6-diamino-1,3,5-triazine-2-yl)guanidine (Impurity B)
4405-08-7
3
(4,6-diamino-1,3,5-triazine-2-yl)guanidine hydrochloride
2959-04-8
4
2,4,6-triamino-1,3,5-triazine(Melamine)
108-78-1
5
Dimethyl amine hydrochloride(Impurity F)
506-59-2
W)
Nepafenac
1
O-AMINOBENZOPHENONE
2835-77-0
2
2-(methylsulfanyl)acetamide
22551-24-2
3
2-(2-amino-3-benzoylphenyl)-2-(methylsulfanyl)acetamide
78281-61-5
4
2-(2-amino-3-benzoyl-5-chlorophenyl) acetamide(Nepafenac Impurity C)
78281-71-7
5
2-Amino-3-benzoyl-5-chloro-α-(methylthio)-phenylacetamide(Nepafenac Impurity D)
78281-60-4
6
2-{[4-methylphenyl)sulfonyl]aminobenzoic acid
6311-23-5
7
2-Amino-5-Chloro Benzophenone
719-59-5
8
2-Amino-3-benzoylbenzeneacetamide
78281-72-8
9
2-(2-amino-3-(hydroxyl(phenyl)methyl)phenylacetamide(Nepafenac Impurity E)
1246956-18-2
10
7-Benzoyl-2-oxindole
51135-38-7
X)
Other
1
Hydroxydichlorodiphenyl ether
3380-30-1
2
1-(3-Aminopropyl)azepan-2-one)
24566-95-8
Y)
Pregabalin
1
IBGA; Impurity B
75143-89-4
2
Lactum Impurity; Impurity 4
61312-87-6
3
S-Lactum Impurity
181289-23-6
4
RS-CMH Acid
181289-15-6
5
Impurity A
148553-51-9
6
S-CMH Acid
181289-34-9
7
Anhydride Impurity
185815-59-2
8
Diamide Impurity
916982-10-0
9
S - Pregabalin Reference Standard
148553-50-8
10
R-CMH Acid
181289-33-8
11
(S)-Mandelic acid
17199-29-0
12
ETHYL CYANOACETATE
105-56-6
13
(R)-Mandelic acid
611-71-2
14
Methyl Ester Impurity
181289-25-8
15
Racemic Methyl Ester Impurity
-
-
16
R-Phenyl ethyl amine
3886-69-9
17
Rac-Pregabalin
128013-69-4
18
R-Salt
-
-
19
S-Salt
-
-
Z)
Quetiapine
1
Impurity A
844639-07-2
2
Impurity B
111974-74-4
3
Impurity D
945668-94-0
4
Impurity H
1076199-40-0
5
Impurity I
329216-67-3
6
Impurity G
3159-07-7
7
2-Nitrodiphenyl sulfide
4171-83-9
AA)
Rivaroxaban
1
Impurity A
438056-69-0
2
Impurity B
161596-47-0
3
Impurity C
24065-33-6
4
Impurity D
446292-07-5
5
Impurity E
6
Impurity F
7
N-({(5S)-2-oxo-3-[4-(3-oxomorpholin-4-yl) phenyl]-1,3-oxazolidin-5-yl}methyl)forma mide
1616563-62-2
8
Impurity H
366789-02-8
9
(R)-Rivaroxaban
865479-71-6
10
5-chloro-N-formyl-N-({(5R)-2-oxo-3-[4-(3oxomorpholin-4-yl)phenyl]-1,3-oxazolidin5-yl}methyl)thiophene-2-carboxamide
-
Not Available
11
((2S)-2-(chloromethyl)oxirane
67843-74-7
12
PHTHALIMIDE
13
2-[(2R)-oxiran-2-ylmethyl]-1Hisoindole-1, 3(2H)-dione
181140-34-1
14
4-(4-nitrophenyl)morpholin-3-one(NPM)
446292-04-2
15
2-chlorothiophene
96-43-5
16
N,N'-dimethylbenzene-1,2-dicarboxamide
17
2-methyl-1H-isoindole-1,3(2H)-dione
550-44-7
BB)
Sildenafil Citrate
1
Imidazole
5587-42-8
CC)
Trelagliptin
1
Impurity A
2
2-(bromomethyl)-4-fluorobenzonitrile
421552-12-7
3
Impurity D
334618-07-4
4
Impurity B
334618-23-4
5
Impurity C
309956-78-3
6
4-fluoro-2-methylbenzonitrile
147754-12-9
7
Impurity G
-
-
8
Impurity E
865759-24-6
9
Impurity F
1029877-94-8
10
Impurity H
865759-25-7
DD)
Valacyclovir
1
Valacyclovir N-formyl Impurity
847670-62-6
EE)
Metformin Hydrochloride
1
Metformin(Impurity A)
461-58-5
2
2-(4,6-diamino-1,3,5-triazin-2-yl)guanidine(Impurity B)
4405-08-7
3
(4,6-Diamino-1,3,5-Triazine-2-Yl)Guanidine hydrochloride 2-(4,6-diamino-1,3,5-triazin-2-yl)guanidine Hydrochloride
2959-04-8
4
Melamine
108-78-1
5
Methanamine
506-59-2
6
N,N-Dimethyl-1,3,5-triazine-2,4,6-triamine(Impurity C)
1985-46-2
FF)
Methoxsalen
1
Pyrogallol
87-66-1
2
2,3,4-Trihydroxyphenacyl chloride
17345-68-5
3
3-bromo-3H-2-benzofuran-1-one
6940-49-4
4
Phthalide
87-41-2
5
6,7-dihydroxy-1-benzofuran-3(2H)-one
6272-27-1
6
2,3-dihydro-1-benzofuran-6,7 -diol
42484-95-7
7
2,3-dihydroxanthotoxol
68123-30-8
8
2,3-dihydroxanthotoxin
3779-03-1
9
Methoxsalen(Reference Standards)
298-81-7
GG)
Methylparaben
1
Methylparaben (Reference Standard)
99-76-3
2
4-Hydroxybenzoic Acid (Impurity A)
99-96-7
HH)
Mirabegron
1
(2R)-2-Hydroxy-N-[2-(4-nitrophenyl)ethyl]-2-phenylacetamide
521284-19-5
2
2-Formamidothiazol-4-acetic acid
75890-68-5
3
(2R)-N-[2-(4-aminophenyl)ethyl]-2- hydroxy-2-phenylethanamide
521284-19-5
4
2-(2-amino-1,3-thiazol-4-yl)acetic acid(Impurity 7)
29676-71-9
5
Ethyl 2-amino-4-thiazoleacetate
53266-94-7
6
D-(-)-Mandelic acid (Impurity A)
611-71-2
7
(S)-mandelate(Impurity E)
17199-29-0
8
2-(4-nitrophenyl) ethanamine hydrochloride
29968-78-3
9
2-Phenylethylamine
64-04-0
10
(1R)-1-phenyl-2-[(2-phenylethyl) amino]ethane hydrochloride
4164-20-9
11
1-(R)-2,4-nitrophenylethylamino-1-phenylethanol
223673-34-5
12
Mirabegron(Reference Standard )
223673-61-8
II)
Mefenamic Acid
1
2,3-Dimethylaniline(Impurity A)
87-59-2
2
N-(2,3-Dimethyl-phenyl)-2-(2,3-dimethylanilino)benzamide(Impurity B)
21122-68-9
3
2-Chlorobenzoic Acid(Impurity C)
118-91-2
4
Benzoic Acid(Impurity D)
65-85-0
5
(2,3-dimethyl-phenyl)-phenyl-amine(Impurity F)
4869-11-8
JJ)
Mesalazine
1
4-Aminophenol(Impurity A)
123-30-8
2
3-Aminophenol(Impurity B)
591-27-5
3
2-Aminophenol(Impurity C)
95-55-6
4
3-Aminobenzoic Acid (Impurity D)
99-05-8
5
3-Aminosalicylic Acid (Impurity F)
570-23-0
6
2,5-dihydroxybenzoic acid(Impurity G)
490-79-9
7
Salicylic Acid(Impurity H)
69-72-7
8
3,5-Diamino-2-hydroxybenzoic acid(Impurity J)
112725-89-0
9
Aniline(Impurity K)
62-53-3
10
2-Chlorobenzoic Acid(Impurity L)
118-91-2
11
2-Chloro-5-nitrobenzoic acid(Impurity M)
2516-96-3
12
5-Nitrosalicylic Acid(Impurity N)
96-97-9
13
4-Aminobenzenesulfonic acid (Impurity O)
121-57-3
14
2-Chloro-3-nitrobenzoic acid(Impurity Q)
3970-35-2
15
3-Nitrosalicylic Acid(Impurity R)
85-38-1
KK)
Nepafenac
1
2-Amino-3-benzoyl-5-chloro-α-(methylthio)-phenylacetamide(Impurity D)
78281-60-4
2
Ethyl-2-(methylthio)acetate
4455-13-4
3
2-[(4-methylphenyl)sulfonylamino] benzoic acid
6311-23-5
4
2-Amino-5-Chloro Benzophenone
719-59-5
5
2-Amino-3-benzoylbenzeneacetamide
78281-72-8
6
2-{2-amino-3-[hydroxyl(phenyl)methyl]phenyl} Acetamide(Impurity E)
1246956-18-2
7
7-benzoyl-1,3-dihydro-indol-2-one;
51135-38-7
LL)
Nimesulide
1
4-Aminosalicylic Acid
65-49-6
2
N-(2,4-dinitro-6-phenoxyphenyl)methanesulfonamide (Impurity A)
51765-56-1
3
2-((Phenoxymethyl)sulfonyl)aniline (Impurity B)
51765-51-6
4
2-Phenoxyaniline
2688-84-8
5
4-Nirro-2-Phenoxyaniline
5422-92-4
6
N-(Methylsulfonyl)-N-(2-phenoxyphenyl)methanesulfonamide (impurity E)
905858-63-1
7
N-Methylsulfonyl Nimesulide(impurity F)
51765-72-1
8
5-Nitro-2-hydroxy-diphenylaether(impurity G)
70995-08-3
MM)
Pregabalin
1
3-Isobutylglutaric Acid (Impurity B)
75143-89-4
2
(2-Methylpropyl)purrolidin-2-one (Lactum Inpurity , Impurity 4)
61312-87-6
3
(4S)-(+)-isobutylpyrrolidin-2-one (S-Lactum Impurity)
181289-23-6
4
3-carbamoylmethyl-5-methyl-hexanoic acid
181289-15-6
5
(3R)-3-(aminomethyl)-5-methylhexanoic acid(Impurity A)
148553-51-9
6
(3S)-3-(carbamoylmethyl)-5-methylhexanoic acid
181289-34-9
7
IBG-Anhydride Impurity
185815-59-2
8
3-(2-methylpropyl)piperidine-2,6-dione
916982-10-0
9
S - Pregabalin Reference Standard
148553-50-8
10
3-CarbaMoyl Mehyl-5-Methyl Hexanoic Acid;
181289-33-8
11
(S)-Mandelic acid
17199-29-0
12
Ethyl Cyanoacetate
105-56-6
13
(R)-Mandelic acid
611-71-2
14
(S)-3-isobutylglutaric acid methyl ester
181289-25-8
15
(R)-(+)-1-Phenylethylamine
3886-69-9
16
(+/-)-Pregabalin
128013-69-4
NN)
Propyl Paraben
1
4-hydroxybenzoic acid propyl ester
94-13-3
2
4-Hydroxy benzoic acid(Impurity A)
99-96-7
3
Methylparaben(Impurity B)
99-76-3
4
Ethylparaben(Impurity C)
120-47-8
OO)
Propofol
1
2-Isopropenyl-6-isopropylphenol(Impurity B)
74926-89-9
PP)
Promethazine Hydrochloride
1
10H-Phenothiazine-10-ethanamine
58-33-3
QQ)
Quetiapine Fumarate
1
2-(2-(4-(Dibenzo[b,f][1,4]thiazepin-11-yl)piperazin-1-yl)ethoxy)ethyl Acetate(Impurity A)
844639-07-2
2
11-(1-Piperazinyl)-dibenzo[b,f][1,4]thiazepine dihydrochloride(Impurity B)
111974-74-4
3
6-(4-benzo[b][1,4]benzothiazepin-6-ylpiperazin-1-yl)benzo[b][1,4]benzothiazepine (Quetiapine Dimer Impurity, Impurity D)
945668-94-0
4
2-[2-(4-benzo[b][1,4]benzothiazepin-6-yl-1-oxidopiperazin-1-ium-1-yl)ethoxy]ethanol (Quetiapine N-Oxide, Impurity H)
1076199-40-0
5
2-(4-benzo[b][1,4]benzothiazepin-6-ylpiperazin-1-yl)ethanol (Quetiapine Hydroxy Inpurity, Impurity I)
329216-67-3
6
Dihydro-11-oxodibenzo[b,f][1,4]thiazepine(Impurity G)
3159-07-7
7
2-Nitrodiphenyl sulfide
4171-83-9
RR)
Rivaroxaban
1
4-(4-Aminophenyl)Morpholin-3-One(Impurity A)
438056-69-0
2
(S)-(+)-Glycidyl Phthalimide (Impurity B)
161596-47-0
3
5-Chloro-2-thiophenecarboxylic acid(Impurity C)
24065-33-6
4
4-[((2R)-Hydroxy-3-phthalimido)propylamine]phenyl-3-morpholinone (Impurity D)
446292-07-5
5
4-[4-[(5S)-5-Phthalimidomethyl-2-oxo-3-oxazolidinyl]phenyl]-3-morpholinone(Impurity E)
446292-08-6
6
4-[4-[(5S)-5-(aminomethyl)-2-oxo-1,3-oxazolidin-3-yl]phenyl]morpholin-3-one,hydrochloride; (Impurity F)
898543-06-1
7
N-({(5S)-2-oxo-3-[4-(3-oxomorpholin-4-yl)phenyl]-1,3-oxazolidin-5-yl}methyl)formamide
1616563-62-2
8
Rrivaroxaban Reference Standard , Impurity H
366789-02-8
9
(R)-Rivaroxaban
865479-71-6
10
((2S)-2-(chloromethyl)oxirane
67843-74-7
11
Phthalimide
85-41-6
12
N-(R)-Glycidyl Phthalimide;
181140-34-1
13
4-(4-nitrophenyl)morpholin-3-one
446292-04-2
14
2-chlorothiophene
96-43-5
15
N,N'-dimethylbenzene-1,2-dicarboxamide
19532-98-0
16
1H-Isoindole-1,3(2H)-dione, 2-methyl-;
550-44-7
SS)
Rilpivirine
1
(E)-3-4(-((2-((4-Cyanophenyl)amino)pyrimidin-4-yl)amino)-3,5-dimethylphenyl)acrylamide (Rilpivirine Amide 1)
500288-66-4
2
(E)-4-((4-((4-(2-cyanovinyl)-2,6-dimethylphenyl)amino)pyrimidin-2-yl)amino)benzamide Rilpivirine Amide 2
1446439-51-5
TT)
Risperidone
1
Bicyclo Risperidone Impurity
-
UU)
Sildenafil Citrate
1
Sodium Imidazole
5587-42-8
VV)
Sitagliptin
1
(3R)-3-amino-4-(2,4,5-trifluorophenyl)butanoic acid (Sitagliptin Acid Impurity)
936630-57-8
2
Boc-(R)-3-Amino-4-(2,4,5-Trifluoro-Phenyl)-Butyric Acid (Sitagliptin Boc Impurity)
486460-00-8
3
2-Buten-1-ol,4-[[(1,1-dimethylethyl)dimethylsilyl]oxy] (Sitagliptin Enamine Impurity)
767340-03-4
4
(R)-3-Amino-4-(2,4-difluorophenyl)-1-(3-(trifluoromethyl)-5,6-dihydro-[1,2,4]triazolo[4,3-a]pyrazin-7(8H)-yl)butan-1-one-phosphate (Impurity C)
1345822-86-7
5
3-(Trifluoromethyl)-[1,2,4]triazolo[4,3-a]pyrazine (Sitagliptin Triazole Impurity)
486460-21-3
WW)
Sumatriptan Succinate
1
3-[2-(Dimethylamino)ethyl]-1H-indol-5-yl-NmethylmethanesulfonamideSuccinate (USPGrade)
103628-48-4
XX)
Sacubitril
1
(2R,4S)-5-biphenyl-4-yl-4-tertbutoxycarbonylamino-2-methyl-pentanoic acid
1012341-50-2
YY)
Trelagliptin
1
6-chloro-3-methyuracil (Impurity A)
4318-56-3
2
2-(bromomethyl)-4-fluorobenzonitrile
421552-12-7
3
(S)-3-Aminopiperidine Dihydrochloride(Impurity D )
334618-07-4
4
(R)-(-)-3-Piperidinamine dihydrochloride(Impurity B)
334618-23-4
5
(R)-3-amino-3-N-Boc-piperidine; (Impurity C)
309956-78-3
6
4-fluoro-2-methyl-benzonitrile
147754-12-9
7
2-((6-chloro-3-methyl-2,4-dioxo-3,4 -dihydropyrimidin-1(2H)-yl)methyl)-4-fluorobenzonitrile(Impurity E)
865759-24-6
8
2-[[6-[(3R)-3-aminopiperidin-1-yl]-3-methyl-2,4-dioxopyrimidin-1-yl]methyl]-4-fluorobenzonitrile,butanedioic acid;(Trelagliptin succinate , Impurity F)
1029877-94-8
9
(R)-2-((6-(3-aminopiperidin-1-yl)-3-methyl-2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)methyl)-4-fluorobenzonitrile;(Impurity H)
865759-25-7
ZZ)
Thiamazol
1
2-methylmercapto-3-methylimidazole
14486-52-3
AAA)
Tramadol
1
O-Desmethyl Tramadol HCl
80456-81-1
BBB)
Tenofovir
1
Tenofovir Monoester Impurity
211364-69-1
CCC)
Teneligliptin
1
1-(3-methyl-1-phenyl-5-pyrazolyl)piperazine
401566-79-8
2
(S)-tert-Butyl 4-oxo-2-(thiazolidine-3-carbonyl)pyrrolidine-1-carboxylate
401564-36-1
3
Teneligliptin Impurity A
NA
4
Teneligliptin Hydrobromide Hydrate
-
906093-29-6
DDD)
Trimethoprim
1
4-Amino-5-(3,4,5-trimethoxybenzyl)pyrimidin-2-ol
60729-91-1
2
(2,4-diaminopyrimidin-5-yl)-(3,4,5-trimethoxyphenyl)methanone
30806-86-1
EEE)
Valacyclovir
1
Valacyclovir N-formyl Impurity
847670-62-6
FFF)
Valsartan
1
N-Valeryl-N-[2'-(1H-tetrazol-5-yl)biphenyl-4-ylmethyl]-L-valine
137862-53-4
GGG)
Other’s
1
Hydroxydichlorodiphenyl ether
3380-30-1
2
1-(3-Aminopropyl)azepan-2-one)
24566-95-8
Phase Transfer Catalyst
Intermediates
Impurities
Customary Research