Name Index:
A 
B 
C 
D 
E 
F 
G 
H 
I 
J 
K 
L 
M 
N 
O 
P 
Q 
R 
S 
T 
U 
V 
W 
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All
Efavirenz
Efavirenz Enantiomer Impurity

(4R)-6-Chloro-4-(cyclopropylethynyl)-1,4-dihydro-4-(trifluoromethyl)-2H-3,1-benzoxazin-2-one
Catalogue No : VL1680006CAS No : 154801-74-8Eletriptan Related Compound 03
1H-indole,5-ethyl-3-[[(2R)-1-methyl-2-pyrrolidinyl]methyl]
Catalogue No : VL990001CAS No : N/AEletriptan Related Compound 02
3-((R-1-Methylpyrrolidin-2-yl)methyl)-5-(E-2-(phenylsulfonyl)vinyl)-1H-indole
Catalogue No : VL990002CAS No : N/AEletriptan Related Compound 01
3-[[(2S)-1-Methyl-2-pyrrolidinyl]methyl]-5-[2-(phenylsulfonyl)ethyl]-1H-indole
Catalogue No : VL990003CAS No : N/AEmtricitabine Enantiomer
4-Amino-5-fluoro-1-[(2S,5R)-2-(hydroxymethyl)-1,3-oxathiolan-5-yl]- 2(1H)-
pyrimidinone; (2S-cis)-4-Amino-5-fluoro-1-[2-(hydroxymethyl)-1,3-oxathiolan- 5-yl]-2(1H)-
pyrimidinone;
Catalogue No : VL54005CAS No : 137530-41-7Emtricitabine Hydroxy Impurity / Emtricitabine S-Fluorouracil Analogue
5-Fluoro-1-[(2R,5S)-2-(hydroxymethyl)-1,3-oxathiolan-5-yl]uracil
Catalogue No : VL54001CAS No : 143790-05-0Emtricitabine Carboxylic Acid Impurity
5-(4-Amino-5-Fluoro-2-oxo-2H-pyrimidin-1-yl)-[1,3]- oxathiolane-2-carboxylic acid
Catalogue No : VL54002CAS No : 1238210-10-0Emtricitabine Sulfoxide Impurity (oxide Impurity) / (Sulfoxide Impurity Isomer 1 And Isomer 2)
4-Amino-5-fluoro-1-[(2R,3RS,5S)-2-(hydroxymethyl)-3-oxido-1,3-oxathiolan-5-yl]-
2(1H)-Pyrimidinone; 5-Fluoro-1-[(2R,3RS,5S)-2-(hydroxymethyl)-3-oxo-1,3-oxathiolane-5-
yl]cytosine
Catalogue No : VL54003CAS No : 152128-77-3Emtricitabin Diastereomer
4-amino-5-fluoro-1-[(2R,5R)-2-(hydroxymethyl)-1,3-oxathiolan-5-yl]pyrimidin-2(1H)-one.
Catalogue No : VL54004CAS No : N/AEnalapril EP Impurity B
(2S)-2-[[(1S)-1-(Ethoxycarbonyl)-3-phenylpropyl]amino] propanoic acid
Catalogue No : VL1360002CAS No : 82717-96-2Enalapril EP Impurity C
(2S)-1-[(2S)-2-[[(1S)-1-Carboxy-3-phenylpropyl] amino] propanoyl]pyrrolidine-2- carboxylic acid
Catalogue No : VL1360003CAS No : 76420-72-9Enalapril EP Impurity D
Ethyl (2S)-2-[(3S,8aS)-3-methyl-1,4-dioxooctahydropyrrolo [1,2-a]pyrazin-2-yl]-4- phenylbutanoate
Catalogue No : VL1360004CAS No : 115729-52-7Enalapril EP Impurity E
(2S)-1-[(2S)-2-[[(1S)-3-Phenyl-1-[(2- phenylethoxy) carbonyl]propyl] amino]propanoyl]pyrrolidine-2-carboxylic acid
Catalogue No : VL1360005CAS No : N/AEnalapril EP Impurity F
(2S)-1-[(2S)-2-[[(1S)-1-(Butoxycarbonyl)-3- phenylpropyl] amino]propanoyl] pyrrolidine-2-carboxylic acid hydrochloride
Catalogue No : VL1360006CAS No : 76391-34-9Enalapril EP Impurity G
(2S)-2-[[(1S)-3-Cyclohexyl-1-(ethoxycarbonyl)propyl]amino] propanoic acid
Catalogue No : VL1360007CAS No : 460720-14-3Enalapril EP Impurity H
(2S)-1-[(2S)-2-[[(1S)-3-Cyclohexyl-1-(ethoxycarbonyl)propyl] amino] propanoyl] pyrrolidine-2-carboxylic acid HCl
Catalogue No : VL1360008CAS No : N/AEnalapril EP Impurity I
1,3-Diaza-2,4-cyclopentadiene
Catalogue No : VL1360009CAS No : 288-32-4Enalapril Diketopiperazine Acid
(αS,3S,8aS)-Hexahydro-3-methyl-1,4-dioxo-α-(2-phenylethyl)pyrrolo[1,2-a]pyrazine-2(1H)-acetic Acid; [3S-[2(R*),3α,8aβ]]-Hexahydro-3-methyl-1,4-dioxo-α-(2-phenylethyl)pyrrolo[1,2-a]pyrazine-2(1H)-acetic Acid
Catalogue No : VL1360013CAS No : 115623-21-7Enalapril EP Impurity A
(2S)-1-[(2S)-2-[[(1R)-1-(Ethoxycarbonyl)-3-phenylpropyl]
amino] propanoyl] pyrrolidine-2-carboxylic acid HCl
Catalogue No : VL1360001CAS No : 76420-74-1Enalapril Impurity 2 / L-Alanine
(2S)-2-Aminopropanoic Acid
Catalogue No : VL1360012CAS No : 56-41-7Enalapril Impurity 4 / L-Proline
(-)-2-Pyrrolidinecarboxylic Acid
Catalogue No : VL1360011CAS No : 147-85-3Enrofloxacin Impurity B
1-Cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-7-(1-piperazinyl)-3-quinolinecarboxylic Acid
Catalogue No : VL3550001CAS No : 85721-33-1Enrofloxacin EP Impurity A / Ciprofloxacin EP Impurity A
1-Cyclopropyl-1,4-dihydro-4-oxo-6-fluoro-7-chloro-3-quinolinecarboxylic Acid
Catalogue No : VL3550003CAS No : 86393-33-1Enrofloxacin Impurity C / Desfluoro Enrofloxacin
1-Cyclopropyl-7-(4-ethylpiperazin-1-yl)-4-oxo-1,4-
dihydroquinoline-3-carboxylic acid
Catalogue No : VL3550002CAS No : 138892-82-7Entacapone EP Impurity C

3,4-Dihydroxy-5-nitrobenzaldehyde
Catalogue No : VL2400003CAS No : 116313-85-0Entacapone Inhouse Impurity C / Entacapone EP Impurity H

(2E)-3-(3,4-Dihydroxy-5-nitrophenyl)-2-(piperidin-1-ylcarbonyl) acrylonitrile
Catalogue No : VL2400001CAS No : 1150310-15-8Entacapone EP Impurity B/ Entacapone Impurity D (Inhouse)

Ethyl (2E)-2-Cyano-3-(3,4-dihydroxy-5-nitrophenyl) acrylate
Catalogue No : VL2400002CAS No : 857629-79-9Entacapone Amide Impurity
2-Cyano-3-(3,4-dihydroxy-5-nitrophenyl) propenamide
Catalogue No : VL2400006CAS No : 158693-01-7Entacapone EP Impurity E
3,5-Dinitro-pyrocatechol
Catalogue No : VL2400004CAS No : 7659-29-2Entacapone Impurity G / (E)-3-O-Methyl Entacapone
(E)-2-cyano-N,N’-diethyl-3-(4-hydroxy-3-methoxy-5-Nitrophenyl)
propenamide
Catalogue No : VL2400005CAS No : 1364322-41-7Ephedrine In house Impurity A
1-Phenyl-1-hydroxypropan-2-one
Catalogue No : VL2050001CAS No : 90-63-1Ethyl 3,4-Dihydroxybenzoate / Erlotinib impurity 26

3,4-Dihydroxybenzoic Acid Ethyl Ester;
Catalogue No : VL2460007 CAS No : N/AErlotinib Impurity 7

2-Amino-4,5-bis(2-methoxyethoxy)benzoic acid ethyl ester
hydrochloride
Catalogue No : VL2460008CAS No : N/AErlotinib lactum Impurity

6,7-Bis-(2-methoxyethoxy)-4(3H)-quinazolinone
Catalogue No : VL2460009 CAS No : 179688-29-0Erlotinib Impurity 6

Ethyl 4,5-Bis(2-methoxyethoxy)-2-nitrobenzoate
Catalogue No : VL2460010CAS No : N/AErlotinib Impurity 10

2-Amino-4,5-bis(2-methoxyethoxy)benzonitrile
Catalogue No : VL2460013CAS No : N/AErlotinib Impurity 13

4,5-bis(2-methoxyethoxy)-2-nitrobenzonitrile
Catalogue No : VL2460012 CAS No : N/AErlotinib Impurity 19

2-amino-4,5-bis(2-methoxyethoxy)benzamide
Catalogue No : VL2460011CAS No : N/AErlotinib Amine Impurity
m-Ethnylaniline
Catalogue No : VL2460006CAS No : N/AErlotinib Chloro Impurity
4-Chloro-6,7-bis(2-methoxyethoxy)quinazoline
Catalogue No : VL2460005CAS No : 183322-18-1Erythromycin EP Impurity D / Anhydro erythromycin A

(1S,2R,3R,4S,5R,8R,9S,10S,11R,12R,14R)-9-[(2,6-Dideoxy-3-Cmethyl-3-O-methyl-α-L-ribo-hexopyranosyl)oxy]-5-ethyl-3-hydroxy-2,4,8,10,12,14-hexamethyl-11-[[3,4,6-trideoxy-3-(dimethylamino)-β-D-xylo-hexopyranosyl]oxy]-6,15,16-trioxatricyclo[10.2.1.11,4]hexadecan-7-one
Catalogue No : VL690010CAS No : 23893-13-2Erythromycin EP Impurity F / Pseudoerythromycin A Enol Ether

2R,3R,6R,7S,8S,9R,10R)-7-[(2,6-Dideoxy-3-C-methyl-3-Omethyl-α-L-ribo-hexopyranosyl)oxy]-3-[(1R,2R)-1,2-dihydroxy-1-methylbutyl]-2,6,8,10,12-pentamethyl-9-[[3,4,6-trideoxy-3-(dimethylamino)-β-Dxylohexopyranosyl]oxy]-4,13-dioxabicyclo[8.2.1 ]tridec-1(12)-en-5-one
Catalogue No : VL690011CAS No : 105882-69-7Erythromycin EP Impurity I

(1S,4S,5R,8R,9S,10S,11R,12R,14R)-5-Ethyl-9-hydroxy-2,4,8,10,12,14-hexamethyl-11-[[3,4,6-trideoxy-3-(dimethylamino)-ß-D-xylohexopyranosyl]oxy]-6,15,16-trioxatricyclo[10.2.1.11,4]hexadec-2-en-7-one
Catalogue No : VL690017CAS No : 546-57-6Erythromycin EP Impurity J

Pseudoerythromycin A hemiketal ; (1RS,2R,3R,6R,7S,8S,9R,10R,12R)-7-[(2,6-dideoxy-3-C-methyl-3-O-methyl-α-Lribo-hexopyranosyl)oxy]-3-[(1R,2R)-1,2-dihydroxy-1-methylbutyl]-1-hydroxy-2,6,8,10,12-pentamethyl-9-[[3,4,6-trideoxy-3-(dimethylamino)-β-D-xylohexopyranosyl]oxy]-4,13-dioxabicyclo[8.2.1]tride
Catalogue No : VL690018CAS No : 105900-46-7Erythromycin Ethylsuccinate EP Impurity G

ethyl 4-(((2S,3R,4S,6R)-2-(((3R,4S,5S,6R,7R,9R,11R,12R,13S,14R)-14-ethyl-7,12,13-trihydroxy-4-(((2R,4R,5S,6S)-5-hydroxy-4-methoxy-4,6-dimethyltetrahydro-2H-pyran-2-yl)oxy)-3,5,7,9,11,13-hexamethyl-2,10-dioxooxacyclotetradecan-6-yl)oxy)-3-hydroxy-6-methyltetrahydro-2H-pyran-4-yl)(methyl)amino)-4-oxo
Catalogue No : VL690003CAS No : N/AErythromycin A Oxime Impurity / 9-Erthromycin 9-oxime / 9- Erthromycin A oxime / Roxithromycin Impurity

Erythromycin A oxime
Catalogue No : VL690001CAS No : 13127-18-9Erythromycin A imino ester Impurity / Erythromycin (6,9-imino ether)

[3R-(3R*,4R*,5S*,6R*,9R*,10S*,11S*,12R*,13R*,15R*)] -10-[(2,6-dideoxy-3-Cmethyl- 3-O-methyl-α-L-ribo-hexopyranosyl)oxy]-6-ethyl-4,5-dihydroxy-3,5,9,11,13,15- hexamethyl-12-[[3,4,6-trideoxy-3-(dimethylamino)-β-D-xylo-hexopyranosyl]oxy]-16-Dioxa-2- azabicyclo[11.2.1]hexadec-1-en-8-one
Catalogue No : VL690002CAS No : 99290-97-8Erythromycin Impurity B
(3R,4S,6R,7R,9R,11R,12S,13R,14R)-6-[4-(dimethylamino)-3-hydroxy-6-methyloxan-2-yl]oxy-14-ethyl-7,12-dihydroxy-4-(5-hydroxy-4-methoxy-4,6-dimethyloxan-2-yl)oxy-3,5,7,9,11,13-hexamethyl-oxacyclotetradecane-2,10-dione;
Catalogue No : VL690009CAS No : 527-75-3Erythromycin EP Impurity E / Erythromycin A Enol Ether
(2R,3R,4S,5R,8R,9S,10S,11R,12R)-9-[(2,6-Dideoxy-3-C-methyl-3-O-methyl-α-L-ribo-hexopyranosyl)oxy]-5-ethyl-3,4-dihydroxy-2,4,8,10,12,14-hexamethyl-11-[[3,4,6-trideoxy-3-(dimethylamino)-β-D-xylohexopyranosyl]oxy]-6,15-dioxabicyclo[10.2.1]pentadec-1(14)-en-7-one
Catalogue No : VL690020CAS No : 33396-29-1Erythromycin EP Impurity H/ Erythromycin A N-oxide/Erythromycin In house G impurity
(3R,4S,5S,6R,7R,9R,11R,12R,13S,14R)-4-[(2,6-Dideoxy-3-C-methyl-3-O-methyl-a-L-ribo-hexopyranosyl)oxy]-14-ethyl-7,12,13-trihydroxy-3,5,7,9,11,13-hexamethyl-6-[[3,4,6-trideoxy-3-(dimethylamino)-ß-D-xylohexopyranosyl]oxy]oxacyclotetradecane-2,10-dione N-oxide
Catalogue No : VL690013CAS No : 992-65-45-dimethylaminobutyryl citalopram/ Escitalopram R-Isomer/ Escitalopram Inhouse Impurity G

(R)-(-)-1-(3-Dimethylaminopropyl)-1-(4-fluoro-phenyl)-1,3-dihydro-isobenzofuran-5-carbonitrile.
Catalogue No : VL1570021CAS No : N/AEscitalopram EP Impurity F

(1RS)-1-[3-(Dimethylamino)propyl]-1-hydroxy-1,3-
dihydroisobenzofuran-5-carbonitrile
Catalogue No : VL1570020 CAS No : N/AEscitalopram EP Impurity A / USP Citalopram Related Compound A / Citalopram Impurity A

1-[3-(Dimethylamino)propyl]-1-(4-fluorophenyl)-1,3-dihydro-5-isobenzofurancarboxamide
Catalogue No : VL1570004CAS No : 64372-56-1Esmolol Dimer Impurity
4-[2-hydroxy-3-[[3-[4-[2-hydroxy-3-[(1-metylethyl
)amino]propoxy]phenyl]-1-oxopropyl](1-
methylethyl)amino]propoxy]-benzeneprpoanoic acid methyl ester
Catalogue No : VL3890001CAS No : N/AEsomeprazole Desmethyl Sulfide

2-((5-methoxy-1H-benzo[d]imidazol-2-yl) thio) methyl)-3, 5-dimethylpyridin-4-ol
Catalogue No : VL112013CAS No : N/AEszopiclone Semiketal
6-(5-Chloro-2-pyridyl)-6,7-dihydro-7-hydroxy-5H-pyrrolo[3,4-b]pyrazin-5-one
Catalogue No : VL780001CAS No : N/AEszopiclone 2,3-Pyrazine dicarboxylic acid
2,3-Pyrazine dicarboxylic acid
Catalogue No : VL780002CAS No : 89-01-0Eszopiclone EP Impurity B
(7RS)-6-(5-Chloropyridin-2-yl)-7-hydroxy-6,7-dihydro-5H-pyrrolo[3,4-b]pyrazin-5-one
Catalogue No : VL780006CAS No : 43200-81-3Ethylphenidate Impurity

Ethyl -2-phenyl-2-(piperidin-2-yl)acetate.
Catalogue No : VL440001CAS No : N/AEtodolac EP Impurity C / Etodolac Related Compound A
(-)-8-Ethyl-1,3,4,9-tetrahydro-1-methylpyrano[3,4-b]indole-1-acetic Acid
Catalogue No : VL2000008CAS No : 109518-50-5Etodolac EP Impurity D
1-Ethyl-1,3,4,9-tetrahydro-8-(1-methylethyl)-pyrano[3,4-b]indole-1-acetic Acid
Catalogue No : VL2000001CAS No : 57917-63-2Etodolac EP Impurity E
1-Ethyl-1,3,4,9-tetrahydro-8-propyl-pyrano[3,4-b]indole-1-acetic Acid
Catalogue No : VL2000002CAS No : 57817-27-3Etodolac EP Impurity F
8-Ethyl-1,3,4,9-tetrahydro-1-(1-methylethyl)-Pyrano[3,4-b]indole-1-acetic Acid
Catalogue No : VL2000003CAS No : 849630-65-5Etodolac EP Impurity G
1-Ethyl-1,3,4,9-tetrahydro-8-(1-methylethyl)-Pyrano[3,4-b]indole-1-acetic Acid
Catalogue No : VL2000004CAS No : 57816-83-8Etodolac EP Impurity H
7-Ethyl-indole-3-ethanol
Catalogue No : VL2000009CAS No : 41340-36-7Etodolac EP Impurity J
1,8-Diethyl-1,3,4,9-tetrahydro-1-methyl-pyrano[3,4-b]indole
Catalogue No : VL2000010CAS No : 115066-03-0Etoricoxib USP Related compound A/4-(Methylsulfonyl)acetophenone
1-(4-Methylsulfonylphenyl)ethanone
Catalogue No : VL1020002 CAS No : 10297-73-1Everolimus IP Impurity E

1-(2-[[(2R,3R,6S)-6-[(2S,3E,5E,7E,9S,11R)-2,13-Dimethoxy3,9,11-trimethyl-12-oxotrideca-3,5,7-triene-1yl)-2-hydroxy-3 methyltetrahydro-2H-pyran-2-yl)-2-oxoacetyl)piperidine-2-carboxylic acid
Catalogue No : VL2280003 CAS No : 147438-30-0Everolimus Impurity C
(2S)-1-[2-Oxo-2-[(2R,3R,6S)-tetrahydro-2-hydroxy-6-[(2S,3E,5E,7E,9S,11R,13R,14R,15E, 17R,19E,21R)-14-hydroxy-22-[(1S,3R,4R)-4-(2-hydroxyethoxy)-3-methoxycyclohexyl]-2,13-dimethoxy-3,9,11,15,17,21-hexamethyl-12,18-dioxo-3,5,7,15,19-docosapentaen-1-yl]-3-methyl-2H-pyran-2-yl]acetyl]-2-piperidinecar
Catalogue No : VL2280001CAS No : 1062122-63-7Everolimus Impurity D (Isomer 1 & 2) / Everolimus Retroaldol Degradation Product

(S)-(2R,3S,6R,E)-1-((1S,3R,4R)-4-(2-Hydroxyethoxy )-3-methoxycyclohexyl)-2,6,8-trimethyl-5,9-diox onon-7-en-3-yl1-(2-((2R,3R,6S)-6-((2S,3E,5E,7E, 9S,11R)-2,13-dimethoxy-3,9,11-trimethyl-12-oxotrideca-3,5,7-trien-1-yl)-2-hydroxy-3-methyl tetrahydro-2H-pyran-2-yl)-2-oxoacetyl)piperidine-2-carbox
Catalogue No : VL2280002CAS No : 1708118-13-1TGR / Everolimus tert-Butyldimethylsilyl Ether Impurity

42-O-[2-[[(1,1-Dimethylethyl)dimethylsilyl]oxy] ethyl]rapamycin;23,27-Epoxy-3H-pyrido[2,1-c][1,4]oxaazacyclohentriacontineRapamycin-Derivative
Catalogue No : VL2280004CAS No : 159351-68-5R,R,R - Ezetimibe Impurity

(3R,4R)-1-(4-Fluorophenyl)-3-((R)-3-(4-fluorophenyl)-3-hydroxypropyl)-4-(4- hydroxyphenyl) azetidin-2-one
Catalogue No : VL203006CAS No : 1593542-96-1Ezetimibe Tetrahydropyran Analog Impurity

(2R,3R,6S)-N, 6-bis(4-fluorophenyl)-tetrahydro-2-(4-hydroxyphenyl)-2Hpyran-3-
carbaxamide
Catalogue No : VL203007CAS No : 1296129-15-1S, S, S-Ezetimibe Impurity

(3S,4S)-1-(4-Fluorophenyl)-3-[(3S)-3-(4-fluorophenyl)-3-hydroxypropyl]-4-(4-
hydroxyphenyl) azetidin-2-one
Catalogue No : VL203009CAS No : 1593543-07-7Ezetimibe Des-Fluoroaniline analog

(3R, 4S)-3-((S)-3-(4-fluorophenyl)-3-hydroxypropyl)-4-(4-hydroxyphenyl)-1- phenylazetidin-2-one
Catalogue No : VL203003CAS No : 302781-98-2Ezetimibe M-Fluoroaniline analog

(3R, 4S)-1-(3-fluorophenyl)-3-((S)-3-(4-fluorophenyl)-3-hydroxypropyl)-4-(4- hydroxyphenyl) azetidin-2-one
Catalogue No : VL203004CAS No : 1700622-06-5Ezetimibe O-Fluorobenzene isomer

(3R, 4S) -1-(2-Fluorophenyl)-3-[(3S)-3-(4-fluorophenyl)-3 hydroxypropyl]-4-(4- hydroxyphenyl) azetidin-2-one
Catalogue No : VL203005CAS No : 1798008-25-9Ezetimibe SRR impurity

Ezetimibe SRS Impurity

Ezetimibe Benzoyl Impurity

(3R,4S)-1-(4-Fluorophenyl)-3-[(3S)-3-(4-fluorophenyl)-3-
hydroxypropyl]- 4-[4-(phenylmethoxy)phenyl]-2-azetidinone
Catalogue No : VL203020CAS No : N/AEzetimibe Cyclized Impurity

(2R,3R,6S)-N, 6-bis(4-fluorophenyl)-tetrahydro-2-(4-
hydroxyphenyl)-2Hpyran-3-carbaxamide
Catalogue No : VL203021CAS No : N/A