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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

Acoltremon p-Methoxy Impurity

Acoltremon p-Methoxy Impurity

CAS: 824947-61-7
Formula: C₁₈H₂₇NO₂
MW: 289.41 g/mol

VQ-047323

Reference Standard

Acoramidis Acetone Acetyl Impurity

Acoramidis Acetone Acetyl Impurity

CAS: 1446701-53-6
Formula: C₁₆H₁₉FO₅
MW: 310.32 g/mol

VQ-029018

Reference Standard

Acoramidis Impurity 3 chemical structure

Acoramidis Impurity 3

CAS: 1446701-52-5
Formula: C₁₁H₁₂BrFO₃
MW: 291.11 g/mol

In stock

Reference Standard

Acotiamide Amide Acid Impurity chemical structure

Acotiamide Amide Acid Impurity

CAS: 1809272-85-2
Formula: C₁₃H₁₂N₂O₆S
MW: 324.31 g/mol

In stock

Reference Standard

Acotiamide Amide Ester Impurity chemical structure

Acotiamide Amide Ester Impurity

CAS: 185105-98-0
Formula: C₁₆H₁₈N₂O₆S
MW: 366.4 g/mol

In stock

Reference Standard

Acridin-9-amine Hydrochloride Hydrate chemical structure

Acridin-9-amine Hydrochloride Hydrate

CAS: 52417-22-8
Formula: C₁₃H₁₃ClN₂O
MW: 248.71 g/mol

VQ-032834

Reference Standard

Acridine-9-carboxaldehyde chemical structure

Acridine-9-carboxaldehyde

CAS: 885-23-4
Formula: C₁₄H₉NO
MW: 207.23 g/mol

VQ-041263

Reference Standard

Acrivastine Di-Z Isomer

Acrivastine Di-Z Isomer

CAS: 2375728-23-5
Formula: C₂₂H₂₄N₂O₂
MW: 348.45 g/mol

VQ-035603

Reference Standard

Acrivastine isomer Z chemical structure

Acrivastine isomer Z

CAS: 1057138-89-2
Formula: C₂₂H₂₄N₂O₂
MW: 348.4 g/mol

VQ-020728

Reference Standard

Actinomycin C2 chemical structure

CAS: 2612-14-8
Formula: C₆₃H₈₈N₁₂O₁₆
MW: 1269.4 g/mol

VQ-030001

Reference Standard

Actinomycin X2 chemical structure

CAS: 18865-48-0
Formula: C₆₂H₈₄N₁₂O₁₇
MW: 1269.4 g/mol

VQ-030002

Reference Standard

Actinoplanone D chemical structure

Actinoplanone D

CAS: 116200-81-8
Formula: C₂₈H₂₅NO₁₀
MW: 535.5 g/mol

VQ-040970

Reference Standard

Acyclovir Benzoate chemical structure

Acyclovir Benzoate

CAS: 59277-91-7
Formula: C₁₅H₁₅N₅O₄
MW: 329.31 g/mol

VQ-021424

Reference Standard

Acyclovir Impurity A chemical structure

Acyclovir Impurity A

CAS: 102728-64-3
Formula: C₁₀H₁₃N₅O₄
MW: 267.24 g/mol

VQ-020729

Reference Standard

Acyclovir L-Leucinate chemical structure

Acyclovir L-Leucinate

CAS: 142963-69-7
Formula: C₁₄H₂₃ClN₆O₄
MW: 374.82 g/mol

VQ-029023

Reference Standard

Acyclovir Monophosphate chemical structure

Acyclovir Monophosphate

CAS: 66341-16-0
Formula: C₈H₁₂N₅O₆P
MW: 305.18 g/mol

VQ-035610

Reference Standard

Acyclovir N-Methylene Dimer chemical structure

Acyclovir N-Methylene Dimer

CAS: 1797131-64-6
Formula: C₁₇H₂₂N₁₀O₆
MW: 462.4 g/mol

VQ-020737

Reference Standard

Adagrasib Hydroxy Impurity

Adagrasib Hydroxy Impurity

Formula: C₂₆H₂₄ClFN₆O₂
MW: 506.96 g/mol

In stock

Reference Standard

Adagrasib Impurity 2

Adagrasib Impurity 2

Formula: C₃₁H₄₃N₇O₃
MW: 561.72 g/mol

In stock

Reference Standard

Adagrasib Impurity 4

Adagrasib Impurity 4

Formula: C₂₀H₂₃ClN₆
MW: 382.89 g/mol

VQ-004347

Reference Standard

Adagrasib Impurity 5 chemical structure

Adagrasib Impurity 5

CAS: 2206737-05-3
Formula: C₂₄H₃₇N₇O₃
MW: 471.6 g/mol

In stock

Reference Standard

Adagrasib Impurity 6 chemical structure

Adagrasib Impurity 6

CAS: 2206737-06-4
Formula: C₂₉H₃₄ClN₇O
MW: 532.1 g/mol

VQ-004349

Reference Standard

Adamantane Carboxylic Acid chemical structure

Adamantane Carboxylic Acid

CAS: 828-51-3
Formula: C₁₁H₁₆O₂
MW: 180.24 g/mol

VQ-047375

Reference Standard

Adamantane-1,3,5,7-tetraol chemical structure

Adamantane-1,3,5,7-tetraol

CAS: 16104-28-2
Formula: C₁₀H₁₆O₄
MW: 200.23 g/mol

VQ-034624

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