Lacidipine
Lacidipine Impurity C
Diethyl (Z)-4-{2-[2-(tert-butoxycarbonyl)vinyl]phenyl}-1,4-
dihydro-2,6-dimethylpyridine-3,5-dicarboxylate
Catalogue No : VL2840001Lacosamide EP Impurity C
(2E)-N-benzyl-3-methoxy-2-(N-methylacetamido)-propanamide
Catalogue No : VL1250008Lacosamide N-desacetyl impurity
(R)-2-Amino-N-benzyl-3-methoxypropionamide; (R)-2-Amino-3-methoxy-N-(phenylmethyl)-propanamide
Catalogue No : VL1250013Lacosamide Impurity 2
(Acetoxymethyl)benzene
Catalogue No : VL1250021 Lacosamide Impurity A
Lacosamide(S)-Isomer;(S)-2-(Acetylamino)-3-methoxy-N-
(phenylmethyl)propanamide
Catalogue No : VL1250010 Lacosamide Impurity K
2-acetamido-N-benzylprop-2-enamide
Catalogue No : VL1250019Lacosamide EP Impurity J
Phenylmethanamine
Catalogue No : VL1250018 Lacosamide EP Impurity B
2-(E)-acetamido-3-(benzylamino)-3-oxopropyl acetate
Catalogue No : VL1250012Lacosamide EP Impurity G
N-benzylacetamide
Catalogue No : VL1250015 Lacosamide Impurity I
(2E)-N-benzyl-2-[(benzylcarbamoyl)amino]-3-methoxypropanamide
Catalogue No : VL1250017Lacosamide EP Impurity F / Lacosamide O- Desmethyl Impurity
(2E)-2-acetamido-N-benzyl-3-hydroxypropanamide
Catalogue No : VL1250011Lacosamide EP Impurity E
(2E)-2-amino-N-benzyl-3-hydroxypropanamide
Catalogue No : VL1250014 Lacosamide EP Impurity H
(2E)-2-acetamido-N-[(2E)-1-(benzylamino)-3-methoxy-1-oxopropan-2-yl]-3-methoxypropanamide
Catalogue No : VL1250016Lamivudine EP Impurity G/ Lamivudine S-Sulfoxide
4-Amino-1-[(2R,3S,5S)-2-(hydroxymethyl)-1,3-oxathiolan-5-yl] pyrimidin-2(1H)-one S-oxide
Catalogue No : VL12003Lamivudine Enantiomer/Lamivudine EP Impurity D
4-Amino-1-[(2S,5R)-2-(hydroxymethyl)-1,3-oxathiolan-5-yl]pyrimidin-2(1H)-one
Catalogue No : VL12006Lamivudine Carboxylic Acid Impurity
(2R,5S)-5-(4-Amino-2-oxopyrimidin-1(2H)-yl)-1,3-oxathiolane-2-
carboxylic acid
Catalogue No : VL12002Lamivudine Diastereomer / Lamivudine EP Impurity B
4-Amino-1-[(2S,5S)-2-(hydroxymethyl)-1,3-oxathiolan-5-yl]-2(1H)-pyrimidinone
Catalogue No : VL12007Lamotrigine Impurity / 3,5-Dichlorobenzoyl Cyanide
3,5-Dichlorophenyl(oxo)acetonitrile
Catalogue No : VL980015Lamotrigine Impurity / 6-(3,4-Dichlorophenyl)-1,2,4-triazine-3,5-diamine
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6-(3,4-Dichlorophenyl)-1,2,4-triazine-3,5-diamine
Catalogue No : VL980017Lamotrigine Impurity / 6-(3,5-Dichlorophenyl)-1,2,4-triazine-3,5-diamine
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6-(3,5-Dichlorophenyl)-1,2,4-triazine-3,5-diamine
Catalogue No : VL980016Lamotrigine Impurity (Lamotrigine Dimer impurity)
N,N’-[6-(2,3-Dichlorophenyl)-1,2,4-triazine-3,5-diyl]bis[2,3-
Dichlorobenzamide
Catalogue No : VL9800132,5 Dichloro Lamotrigine
1,2,4-Triazine-3,5-diamine, 6-(2,5-dichlorophenyl)
Catalogue No : VL980019Lamotrigine EP Impurity E
2,3-Dichlorobenzoic acid
Catalogue No : VL9800102,3-Dichlorobenzoyl Cyanide / Lamotrigine Impurity
2,3-Dichlorobenzoyl Nitrile
Catalogue No : VL980011Lamotrigine Impurity G
6-(2,4-dichlorophenyl)-1,2,4-triazine-3,5-diamine
Catalogue No : VL980009Lamotrigine EP Impurity C / Z-Iminoguanidine Intermediate for Lamotrigine
6-(2,3-Dichlorophenyl)-3-imino-3,4-dihydro-1,2,4-triazin-5-amine
Catalogue No : VL980006Lamotrigine EP Impurity B / E-Isomer of Iminoguanidine For Lamotrigine
2-Cyano-2-[(3,4-dichlorophenyl)hydrazono]acetamide
Catalogue No : VL980007Lamotrigine EP Impurity D / Dioxo Lamotrigine
6-(2,3-Dichlorophenyl)-1,2,4-triazine-3,5(2H,4H)-dione; Dioxo Lamotrigine
Catalogue No : VL980008CAS No : 661463-79-2Lamotrigine Impurity / N2-Methyllamotrigine
6-(2,3-dichlorophenyl)-3-imino-2-methyl-1,2,4-triazin-5-amine
Catalogue No : VL980012Lansoprazole EP Impurity D/1H-Benzimidazol-2-ol/2-Hydroxybenzimidazole
1,3-Dihydro-2H-benzimidazol-2-one; 2-Benzimidazolinone; 2,3-Dihydro-2-oxo-1Hbenzimidazole;
2-Benzimidazolol; 2-Benzimidazolone; N,N’ -(1,2-Phenyleneurea);
Catalogue No : VL92003Lansoprazole Acid Impurity
3-methyl-4-((trifluoromethoxy)methyl)picolinic acid
Catalogue No : VL92002Lansoprazole N-Oxide / Lansoprazole EP Impurity A
2-[[[3-Methylpyridinyl] methyl]sulfinyl]-1H-benzimidazole
Catalogue No : VL92001Latanoprost Related Compound D
Isopropyl (Z)-7-{(1R,2R,3R,5S)-2-[(R)-5-phenyl-3-(triethylsilyloxy)pentyl]-
3,5-bis(triethylsilyloxy)cyclopentyl}hept-5-enoate
Catalogue No : VL93002Latanoprost Related Compound E
((Z)-7-[(1R,2R,3R,5S)-3,5-dihydroxy-2-[(3R)-3-hydroxy-5-phenylpentyl]cyclopentyl]-5-heptenoic acid)
Catalogue No : VL93003Leflunomide Inhouse Impurity
3-hydroxy-N-[4-(trifluoromethyl)phenyl] propanamide
Catalogue No : VL1060015 Leflunomide Impurity C
5-methyl-N-(3-(trifluoromethyl) phenyl) isoxazole-4-carboxamide
Catalogue No : VL1060001Leflunomide Impurity A
4-(trifluoromethyl) aniline
Catalogue No : VL1060002Leflunomide Impurity B
N-(4-Trifluoromethylphenyl)-2-cyano-3-hydroxycrotonamide
Catalogue No : VL1060003Leflunomide Impurity D
5-Methylisoxazole-4-carboxylic acid
Catalogue No : VL1060004Leflunomide Impurity E
3-methyl-N-(4-(trifluoromethyl) phenyl) isoxazole-4-carboxamide
Catalogue No : VL1060005Leflunomide Cyano Impurity
2-Cyano-N-[4-(trifluoromethyl)phenyl]- acetamide
Catalogue No : VL1060007Leflunomide EP Impurity F
5-Methyl-N-[2-(trifluoromethyl)phenyl]-4-isoxazolecarboxamide
Catalogue No : VL1060008 Leflunomide EP Impurity G
5-Methyl-N-(4-methylphenyl)isoxazole-4-carboxamide
Catalogue No : VL1060009 Leflunomide Metabolite Ethyl Analog
Levetiracetam R-Isomer / Levetiracetam EP Impurity D
(2R-2-(2-Oxopyrrolidin-1-yl)butanamide)
Catalogue No : VL1280001Levetiracetam Carboxylic Acid Impurity
(S)-2-(2-oxo-pyrrolidin-1-yl) butanoic acid
Catalogue No : VL1280003Levetiracetam D-Isomer
(2R-2-(2-Oxopyrrolidin-1-yl)butanamide)
Catalogue No : VL1280004Levocetirizine S-Isomer
(S)-2-[2-[4-[(4-Chlorophenyl)phenylmethyl]piperazin-1-yl]ethoxy]acetic acid dihydrochloride
Catalogue No : VL1550001Levocetirizine Impurity 6
N,N-Bis(2-chloroethyl)benzenesulfonamide
Catalogue No : VL1550002Levofloxacin Related Compound F
(S)-3,7-dihydro-3-methyl-10-(4-methylpiperazin-1-yl)-7-oxo-2H- [1,4]oxazino[2,3,4-ij]quinoline-6-carboxylic acid
Catalogue No : VL860010Levofloxacin Decarboxy Impurity
(S)-9-fluoro-3-methyl-10-(4-methylpiperazin-1-yl)-2H-[1,4]oxazino
[2,3,4-ij]quinolin-7(3H)-one
Catalogue No : VL860011Levofloxacin Related Compound C (Ethyl Ester)
Ethyl(S)-9fluoro-2,3-dihydro-3-methyl-10-(4-methyl-1-piperazinyl)-7-oxo-7Hpyrido[
1,2,3-de]-1,4-benzoxazine-6-carboxylate
Catalogue No : VL86006Levofloxacin Related Compound B/Levofloxacin Q-Acid
(S)-(-)-9,10-Difluoro-2,3-dihydro-3-methyl-7-oxo-7H-pyrido[1,2,3-
de]-1,4-benzoxazine-6-carboxylic Acid
Catalogue No : VL86005Levofloxacin Related Compound A (N-Desmethyl Impurity)
((S)-9-fluoro-3-methyl-10-(piperazin-1-yl)-7-oxo-2,3-dihydro-7H-pyrido[1,2,3-
de][1,4]benzoxazine-6-carboxylic acid)
Catalogue No : VL86001Levofloxacin Diamine Impurity
Desfluoro Levofloxacin
(S)-2,3-Dihydro-3-methyl-10-(4-methyl-1-piperazinyl)-7-oxo-7H-pyrido(1,2,3-de)(1,4)benzoxazine-6-carboxylic acid
Catalogue No : VL86008Levofloxacin Impurity F (Levofloxacin N-oxide/Impurity-5)
4-[(3S)-6-carboxy-9-fluoro-3-methyl-7-oxo-2,3-dihydro-7H-pyrido[1,2,3-de]-1,4-benzoxazin-10-yl]methylpiperazine 1-oxide
Catalogue No : VL86002Levofloxacin Related Compound E / Levofloxacin EP Impurity 4
(3R)-9-(2-(methylamino)ethylamino)-8-fluoro-2,3,3a,6-tetrahydro-3-methyl-6-oxobenzo[de]chromene-5-carboxylic acid
Catalogue No : VL86003Levofloxacin Formyl Impurity 4
(3R)-9-(2-(N-Formyl-methylamino)-(N-Formyl-ethylamino))-8-fluoro-2,3,3a,6-tetrahydro-3-methyl-6-oxobenzo[de]chromene-5-Carboxylic acid
Catalogue No : VL86004Levofloxacin Piperazine Analogue
9-Fluoro-2,3-dihydro-3-methyl-10-(1-piperazinyl)-7-oxo-7H-pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylic acid
Catalogue No : VL86009Levofloxacin R-Isomer / Dextrofloxacin
(+)-(R)-9-Fluoro-2,3-dihydro-3-methyl-10-(4-methyl-1-piperazinyl)- 7-oxo-7H-pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylic acid
Catalogue No : VL860015Levosulpride EP Impurity A
((S)-1-ethylpyrrolidin-2-yl)methanamine
Catalogue No : VL580001Levothyroxine T4 Aldehyde/ Levothyroxine EP Impurity I
4-(4-Hydroxy-3,5-diiodophenoxy)-3,5-diiodobenzaldehyde
Catalogue No : VL1320001 Levothyroxine EP Impurity F/ Levothyroxine T6 Impurity (USP)
(2S)-2-Amino-3-[4-[4-(4-hydroxy-3,5-diiodophenoxy)-3,5-diiodophenoxy]-3,5-diiodophenyl]propanoic acid
Catalogue No : VL1320011 Levothyroxine Impurity-E (Impurity III)
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(2S)-2-Amino-3-[4-(4-hydroxyphenoxy)-3,5-diiodophenyl]-
propanoic acid.
Catalogue No : VL1320021 Levothyroxine O-Methyl Impurity
2-amino-3-(4-(3, 5-diiodo-4-methoxyphenoxy)-3, 5-diiodophenyl) propanoic acid
Catalogue No : VL13200073,5,3’,5’-Tetraiodo Thyrolactic Acid
3-[4-(4-Hydroxy-3,5-diiodophenoxy)-3,5-diiodophenyl]lactic Acid
Catalogue No : VL1320006Levothyroxine T4-Hydroxyacetic Acid Impurity
2-hydroxy-2-(4-(4-hydroxy-3,5-diiodophenoxy)-3,5-diiodophenyl) acetic acid
Catalogue No : VL1320010Levothyroxine EP Impurity C, T3-Acetic Acid (USP)
[4-(4-Hydroxy-3-iodophenoxy)-3,5-diiodophenyl]acetic acid
Catalogue No : VL1320009Levothyroxine Impurity K / 3,3’,5’-Triiodo-L-Thyronine
(2S)-2-Amino-3-[4-(4-hydroxy-3,5-diiodophenoxy)-3-iodophenyl] propanoic acid
Catalogue No : VL1320013Levothyroxine N-Formyl Impurity / N-Formyl-T4 (USP)
N-Formyl-O-(4-hydroxy-3,5-diiodophenyl)-3,5-diiodo-L-tyrosine
Catalogue No : VL1320014Levothyroxine N-Acetyl Impurity / N-Acetyl-T4 (USP)
N-Acetyl-O-(4-hydroxy-3,5-diiodophenyl)-3,5-diiodo-L-tyrosine
Catalogue No : VL1320015Liothyronine / Levothyroxine EP Impurity A
(2S)-2-Amino-3-[4-(4-hydroxy-3-iodophenoxy)-3,5-diiodophenyl]propanoic acid
Catalogue No : VL1320016Levothyroxine N-Methylamide
(S)-2-Amino-3-[4-(4-hydroxy-3,5-diiodophenoxy)-3,5-diiodophenyl]-Nmethylpropanamide
Catalogue No : VL1320017Levothyroxine T4 Amine O-Methyl /Levothyroxine O-Methyl-Tetraiodothyroethylamine
2-[4-(3,5-Diiodo-4-methoxyphenoxy)-3,5-diiodophenyl]ethanamine
Catalogue No : VL1320018Levothyroxine EP Impurity B
(2S)-2-Amino-3-[4-(3-chloro-4-hydroxy-5-iodophenoxy)-3,5-diiodophenyl]propanoic acid
Catalogue No : VL1320012Levothyroxine T4-Acetamide (USP)/Levothyroxine Acetamide Impurity
 Levothyroxine Acetamide Impurity.png)
2-(4-(4-Hydroxy-3,5-diiodophenoxy)-3,5-diiodophenyl)acetamide.
Catalogue No : VL1320002Lidocaine BP Impurity B/ Lidocaine N-Oxide
Lidocaine BP Impurity B/ Lidocaine N-Oxide
Catalogue No : VL1040011Lidocaine Related Compound H / Lidocaine BP Impurity H
2-Chloro-N-(2,6-dimethylphenyl)acetamide
Catalogue No : VL1040014Lidocaine BP Impurity C
N-(2,6-Dimethylphenyl)acetamide
Catalogue No : VL1040003Lidocaine BP Impurity D
N-(2,6-Dimethylphenyl)-2-(ethylamino)acetamide HCl
Catalogue No : VL1040004Lidocaine BP Impurity F / Lidocaine 2,3-Dimethyl Analog
2-(Diethylamino)-N-(2,3-dimethylphenyl) acetamide
Catalogue No : VL1040020Lidocaine BP Impurity G
N-(2,6-Dimethylphenyl)-2-[(1-methylethyl)amino]acetamide HC
Catalogue No : VL1040007CAS No : 35891-87-3 (HCl salt)Lidocaine EP Impurity A/ Lidocaine Related Compound A
2,6-Dimethylbenzenamine
Catalogue No : VL1040001 Lidocaine BP Impurity I / USP Lidocaine Impurity I / Lidocaine 2,4-Dimethyl Analog
2-(Diethylamino)-N-(2,4-dimethylphenyl)acetamide
Catalogue No : VL1040008Lidocaine BP Impurity K / N-Desethyl-N-Methyl Lidocaine HCl
N-(2,6-Dimethylphenyl)-2-(ethylmethylamino)acetamide
Catalogue No : VL1040019Lidocaine Impurity J
2-(Diethylamino)-N-(2,5-dimethylphenyl)acetamide HCl
Catalogue No : VL1040009N-Aminoacyl Linagliptin / Linagliptin Amino Acyl Impurity
(R)-1-(1-(7-(but-2-yn-1-yl)-3-methyl-1-((4-methylquinazolin-2-yl)
methyl)-2, 6-dioxo-2, 3, 6, 7-tetrahydro-1H-purin-8-yl) piperidin-3-yl) urea
Catalogue No : VL870003Linagliptin Bromo Impurity / LIP-2-E-Bromobutene
(R, E)-8-(3-aminopiperidin-1-yl)-7-(3-bromobut-2-en-1-yl)-3-methyl-1-((4-
methylquinazolin-2-yl) methyl)-1H-purine-2, 6(3H, 7H)-dione
Catalogue No : VL870001Lisinopril EP Impurity E / Lisinopril R,S,S Isomer
2S)-1-[(2S)-6-Amino-2-[[(1R)-1-carboxy-3-phenylpropyl]amino]hexanoyl] pyrrole-
2-carboxylic acid
Catalogue No : VL600001Lisinopril EP Impurity F / Lisinopril Cyclohexyl analogue
(2S)-1-[(2S)-6-amino-2-[[(1S)-1-carboxy-3-cyclohexylpropyl]amino]
hexanoyl]pyrrole-2-carboxylic acid
Catalogue No : VL600002Lisinopril EP Impurity I / N-Alkyl Lisinopril
(2S)-1-[(2S)-2,6-Bis[[(1S)-1-Carboxy-3-phenylpropyl]-
amino]hexanoyl]pyrrolidine- 2-carboxylic acid
Catalogue No : VL60010 Lopinavir Related Compound C / Lopinavir Divalinate (USP)
(2R)-N-[(1S,2S,4S)-1-Benzyl-2-hydroxy-4-[[(2S)-3-methyl2-[2-oxotetrahydro
pyrimidin-1(2H)-yl]butanoyl]amino]5-phenylpentyl]-3-methyl-2-[2-oxotetra
hydropyrimidin1(2H)-yl]butanamide
Catalogue No : VL1470007Rufinamide Impurity 2/4-Descarboxamido Rufanamide 4- Carboxylic Acid
1-(2,6-Difluorobenzyl)-1H-1,2,3-triazole-4-carboxylic Acid
Catalogue No : VL3000004 Rupatadine impurity B/ Loratadine EP Impurity G/Loratadine USP Related Compound B
8-Chloro-6,11-dihydro-11-(1-methyl-4-piperidinylidene)-5Hbenzo[5,6]cyclohepta[1,2-b]pyridine
Catalogue No : VL810009 Loratadine USP Related Compound B
8-Chloro-6,11-dihydro-11-(1-methyl-4-piperidinylidene)-5H-benzo[5,6]cyclohepta[1,2-b]pyridine
Catalogue No : VL810006 Loratadine USP Related Compound E
4,8-Dichloro-5,6-dihydro-11H-benzo[5,6]cyclohepta[1,2-
b]pyridin-11-one
Catalogue No : VL810012 Dehydro Loratadine Isomer - B Impurity
Ethyl 4-(8-chloro-11H-benzo [5, 6] cyclohepta [1, 2-b] pyridine-11-ylidene)
piperidine-1-carboxylate
Catalogue No : VL810002Hydroxy deacyl analog - Loratadine Impurity
8-Chloro-5, 6-dihydro-11-hydroxy-11-(1-methylpiperidin-4-yl)-11H-benzo [5, 6]
cyclohepta [1, 2-b] pyridine
Catalogue No : VL810003Hydroxy Loratadine
Ethyl 4-(8-chloro-11-hydroxy-5, 6-dihydro-11Hbenzo [5, 6] cyclohepta [1, 2-b]
pyridin-11-yl) piperidin-1-carboxylate
Catalogue No : VL810004Lorcaserin S-isomer
(S)-8-chloro-1-methyl-2,3,4,5-tetrahydro-1H-benzo[d]azepine hydrochloride
Catalogue No : VL3200001Losartan Impurity B
(2’-(1H-tetrazol-5-yl)-[1,1’-biphenyl]-4-yl)methanol
Catalogue No : VL214009Losartan Potassium Related Compound A
4’-((2-butyl-4-chloro-formyl-1H-imidazol-1-yl)methyl)biphenyl-2-carbonitrile
Catalogue No : VL214001Losartan Potassium Related Compound B
4’-((2-butyl-4-chloro-5-(hydroxymethyl)-1H-imidazol-1-yl)methyl)biphenyl-2-carbonitrile
Catalogue No : VL214002Losartan EP Impurity C
2-Butyl-5-chloro-1-[p-(o-1H-tetrazol-5-
ylphenyl)benzyl]imidazole-4-methanol
Catalogue No : VL214022Losartan Potassium Related Compound C
(1-((2’ -(1H-tetrazol-5-yl)-[1,1’ -biphenyl]-4-yl)methyl)-2-butyl-5-chloro-1H-imidazol-4-yl)methanol
Catalogue No : VL214006CAS No : 114799-13-2Losartan Potassium Related Compound D
2-butyl-4-chloro-1H-imidazole-5-carbaldehyde
Catalogue No : VL214005CAS No : 83857-96-9Losartan Potassium Related Compound J
(1-((2’ -(2H-tetrazol-5-yl)biphenyl-4-yl)methyl)-2-butyl-4-chloro-1H-imidazol-5-yl)methyl acetate
Catalogue No : VL214004CAS No : 1006062-27-6Losartan Potassium Related Compound K
1-((2’ -(2H-tetrazol-5-yl)biphenyl-4-yl)methyl)-2-butyl-4-chloro-1H-imidazole-5-carbaldehyde
Catalogue No : VL214003CAS No : 1159977-26-0Losartan Potassium Impurity M / 2H-Dimer
(1-((2’ -(2-((1-((2’ -(1H-tetrazol-5-yl)-[1,1’ -biphenyl]-4-yl)methyl)-2-butyl-4-chloro-1H-imidazol-5-yl)methyl)-2H-tetrazol-5-yl)-[1,1’ -biphenyl]-4-yl)methyl)-2-butyl-4-chloro-1H-imidazol-5-yl)methanol
Catalogue No : VL214007Losartan Potassium Impurity L / H-Dimer
(1-((2’ -(1-((1-((2’ -(1H-tetrazol-5-yl)-[1,1’ -biphenyl]-4-yl)methyl)-2-butyl-4-chloro-1H-imidazol-5-yl)methyl)-1H-tetrazol-5-yl)-[1,1’ -biphenyl]-4-yl)methyl)-2-butyl-4-chloro-1H-imidazol-5-yl)methanol
Catalogue No : VL214008
