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Impurities & Reference Standards

API Impurities

Source 1942 api impurities for research, QC and production, documented with COA and SDS.

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Reference Standard

L-Proline, methyl ester chemical structure

L-Proline, methyl ester

CAS: 2577-48-2
Formula: C₆H₁₁NO₂
MW: 129.16 g/mol

VQ-045076

Reference Standard

L-Pyroglutamyl Alanine chemical structure

L-Pyroglutamyl Alanine

CAS: 21282-08-6
Formula: C₈H₁₂N₂O₄
MW: 200.19 g/mol

VQ-027180

Reference Standard

L-Trp4-Lanreotide

L-Trp4-Lanreotide

CAS: 1219612-61-9
Formula: C₅₄H₆₉N₁₁O₁₀S₂
MW: 1096.33 g/mol

VQ-031436

Reference Standard

L-Valine Orlistat chemical structure

L-Valine Orlistat

CAS: 1243107-50-7
Formula: C₂₈H₅₁NO₅
MW: 481.7 g/mol

VQ-049336

Reference Standard

L-Valyl-L-histidyl-L-asparaginyl-L-phenylalanine

L-Valyl-L-histidyl-L-asparaginyl-L-phenylalanine

CAS: 289030-07-5
Formula: C₂₄H₃₃N₇O₆
MW: 515.56 g/mol

VQ-034138

Reference Standard

Labetalol Acetonide chemical structure

Labetalol Acetonide

CAS: 2731858-23-2
Formula: C₂₂H₂₈N₂O₃
MW: 368.5 g/mol

VQ-022908

Reference Standard

Labetalol Impurity 6 chemical structure

Labetalol Impurity 6

CAS: 101416-22-2
Formula: C₂₃H₂₄N₂O₃
MW: 376.4 g/mol

VQ-048769

Reference Standard

Labetalone hydrochloride chemical structure

Labetalone hydrochloride

CAS: 96441-14-4
Formula: C₁₉H₂₃ClN₂O₃
MW: 362.8 g/mol

VQ-026325

Reference Standard

Lacidipine Impurity 1

Lacidipine Impurity 1

CAS: 207619-69-0
Formula: C₁₅H₁₈O₂
MW: 230.3 g/mol

In stock

Reference Standard

Lacidipine Impurity C chemical structure

Lacidipine Impurity C

CAS: 103890-79-5
Formula: C₂₆H₃₃NO₆
MW: 455.5 g/mol

In stock

Reference Standard

Lacidipine Monomethyl Ester chemical structure

Lacidipine Monomethyl Ester

CAS: 103890-81-9
Formula: C₂₅H₃₁NO₆
MW: 441.5 g/mol

VQ-031400

Reference Standard

Lacidipine Regio Impurity

Lacidipine Regio Impurity

CAS: 1160755-72-5
Formula: C₂₆H₃₃NO₆
MW: 455.54 g/mol

In stock

Reference Standard

Lacosamide (racemate) chemical structure

Lacosamide (racemate)

CAS: 175481-26-2
Formula: C₁₃H₁₈N₂O₃
MW: 250.29 g/mol

VQ-031404

Reference Standard

Lacosamide Impurity 4 chemical structure

Lacosamide Impurity 4

CAS: 474534-78-6
Formula: C₁₁H₁₆N₂O₂
MW: 208.26 g/mol

VQ-048774

Reference Standard

Lacosamide Impurity A chemical structure

Lacosamide Impurity A

CAS: 880468-89-3
Formula: C₁₆H₂₄N₂O₄
MW: 308.37 g/mol

VQ-031401

Reference Standard

Lacosamide N-Methyl Impurity chemical structure

Lacosamide N-Methyl Impurity

CAS: 2764892-65-9
Formula: C₁₄H₂₀N₂O₃
MW: 264.32 g/mol

VQ-031403

Reference Standard

Lacosamide N-Methyl Impurity(racemic) chemical structure

Lacosamide N-Methyl Impurity(racemic)

CAS: 388619-64-5
Formula: C₁₄H₂₀N₂O₃
MW: 264.32 g/mol

VQ-037848

Reference Standard

Lacosamide Propanamide Impurity chemical structure

Lacosamide Propanamide Impurity

CAS: 1885094-46-1
Formula: C₆H₁₂N₂O₃
MW: 160.17 g/mol

VQ-037846

Reference Standard

Lactic Acid Dimer chemical structure

Lactic Acid Dimer

CAS: 617-57-2
Formula: C₆H₁₀O₅
MW: 162.14 g/mol

In stock

Reference Standard

Lafutidine Dihydro Impurity chemical structure

Lafutidine Dihydro Impurity

CAS: 118288-14-5
Formula: C₂₂H₃₁N₃O₄S
MW: 433.6 g/mol

VQ-037855

Reference Standard

Lamivudine Acid (Mixture Of Diastereomers)

Lamivudine Acid (Mixture Of Diastereomers)

CAS: 2382818-80-4
Formula: C₈H₉N₃O₄S
MW: 243.24 g/mol

VQ-035206

Reference Standard

Lamivudine Dimer Impurity

Lamivudine Dimer Impurity

CAS: 1904611-18-2
Formula: C₁₇H₂₂N₆O₆S₂
MW: 470.52 g/mol

VQ-026336

Reference Standard

Lamivudine Impurity 1 chemical structure

Lamivudine Impurity 1

CAS: 147027-10-9
Formula: C₁₈H₂₇N₃O₄S
MW: 381.5 g/mol

In stock

Reference Standard

Lamivudine Impurity 19 chemical structure

Lamivudine Impurity 19

CAS: 953806-67-2
Formula: C₁₂H₂₂O₄
MW: 230.3 g/mol

VQ-031421

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