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Impurities & Reference Standards

Pharmacopoeial and non-pharmacopoeial impurities, metabolites, nitrosamines and working standards with characterisation data for QC and regulatory work.

28,554products

6sub-categories

2,746in stock

COA + SDSwith every lot

API Impurities 14,252 Pharmacopeial Impurities (EP / USP / BP) 4,401 Nitrosamine Impurities 650 Stable Isotope Labelled Standards (Deuterated, 13C, 15N) 1,612 Metabolites & Degradation Products 4,146 API Reference Standards 3,493

Reference Standard

N-Deacetyl-N-Formyl Agomelatine chemical structure

N-Deacetyl-N-Formyl Agomelatine

CAS: 138113-05-0
Formula: C₁₄H₁₅NO₂
MW: 229.27 g/mol

VQ-024170

Reference Standard

N-Debenzoyl-N-propanoyl-10-deacetyl Paclitaxel chemical structure

N-Debenzoyl-N-propanoyl-10-deacetyl Paclitaxel

CAS: 173101-47-8
Formula: C₄₂H₅₁NO₁₃
MW: 777.9 g/mol

VQ-033028

Reference Standard

N-Debenzoyl-N-Propanoyl-10-Deacetylpaclitaxel chemical structure

N-Debenzoyl-N-Propanoyl-10-Deacetylpaclitaxel

CAS: 173101-59-2
Formula: C₄₁H₄₉NO₁₃
MW: 763.8 g/mol

VQ-033027

Reference Standard

N-Debenzoylpaclitaxel 1-Oxopentyl Amino Ester chemical structure

N-Debenzoylpaclitaxel 1-Oxopentyl Amino Ester

CAS: 173101-55-8
Formula: C₄₅H₅₅NO₁₄
MW: 833.9 g/mol

VQ-041299

Reference Standard

N-Dechloroethyl Cyclophosphamide chemical structure

N-Dechloroethyl Cyclophosphamide

CAS: 36761-83-8
Formula: C₅H₁₂ClN₂O₂P
MW: 198.59 g/mol

VQ-029956

Reference Standard

N-Deethyl Dorzolamide Hydrochloride chemical structure

N-Deethyl Dorzolamide Hydrochloride

CAS: 164455-27-0
Formula: C₈H₁₃ClN₂O₄S₃
MW: 332.9 g/mol

VQ-030292

Reference Standard

N-Demethyl Erythromycin A chemical structure

N-Demethyl Erythromycin A

CAS: 992-62-1
Formula: C₃₆H₆₅NO₁₃
MW: 719.9 g/mol

VQ-021184

Reference Standard

N-Demethyl Ivabradine chemical structure

N-Demethyl Ivabradine

CAS: 215935-23-2
Formula: C₂₆H₃₄N₂O₅
MW: 454.6 g/mol

VQ-037785

Reference Standard

N-Demethyl Olanzapine D8 chemical structure

N-Demethyl Olanzapine D8

CAS: 786686-82-6
Formula: C₁₆H₁₈N₄S
MW: 306.5 g/mol

VQ-034938

Reference Standard

N-Demethyl Tepotinib chemical structure

N-Demethyl Tepotinib

CAS: 1103506-82-6
Formula: C₂₈H₂₆N₆O₂
MW: 478.5 g/mol

VQ-034124

Reference Standard

N-Demethyl Trimebutine Hydrochloride chemical structure

N-Demethyl Trimebutine Hydrochloride

CAS: 294882-33-0
Formula: C₂₁H₂₈ClNO₅
MW: 409.9 g/mol

VQ-021354

Reference Standard

N-Demethyl Trimebutine-d5 Hydrochloride chemical structure

N-Demethyl Trimebutine-d5 Hydrochloride

CAS: 1286632-72-1
Formula: C₂₁H₂₈ClNO₅
MW: 414.9 g/mol

VQ-042699

Reference Standard

N-Demethylazithromycin chemical structure

N-Demethylazithromycin

CAS: 172617-84-4
Formula: C₃₇H₇₀N₂O₁₂
MW: 735 g/mol

VQ-020878

Reference Standard

N-Demethylclindamycin chemical structure

N-Demethylclindamycin

CAS: 22431-45-4
Formula: C₁₇H₃₁ClN₂O₅S
MW: 411 g/mol

VQ-029850

Reference Standard

N-Demethylrifampin chemical structure

N-Demethylrifampin

CAS: 13292-45-0
Formula: C₄₂H₅₆N₄O₁₂
MW: 808.9 g/mol

VQ-033536

Reference Standard

N-Demethylspinosyn D chemical structure

N-Demethylspinosyn D

CAS: 149439-70-3
Formula: C₄₁H₆₅NO₁₀
MW: 732 g/mol

VQ-042251

Reference Standard

N-Depiperidin-3-amine Linagliptin Dimer chemical structure

N-Depiperidin-3-amine Linagliptin Dimer

CAS: 2253964-98-4
Formula: C₄₅H₄₄N₁₄O₄
MW: 844.9 g/mol

In stock

Reference Standard

N-Depropylpropafenone

N-Depropylpropafenone

CAS: 86383-22-4
Formula: C₁₈H₂₁NO₃ : C₂H₂O₄
MW: 688.77 g/mol

VQ-045122

Reference Standard

N-Des Acryloyl Ibrutinib Impurity chemical structure

N-Des Acryloyl Ibrutinib Impurity

CAS: 1642571-07-0
Formula: C₂₂H₂₃ClN₆O
MW: 422.9 g/mol

VQ-037618

Reference Standard

N-Des acryloyl Sotorasib chemical structure

N-Des acryloyl Sotorasib

CAS: 2484718-65-0
Formula: C₂₇H₂₈F₂N₆O₂
MW: 506.5 g/mol

VQ-045339

Reference Standard

N-Des(1,1-dimethylethyl) N-Cyclohexyl Finasteride chemical structure

N-Des(1,1-dimethylethyl) N-Cyclohexyl Finasteride

CAS: 133216-45-2
Formula: C₂₅H₃₈N₂O₂
MW: 398.6 g/mol

VQ-030733

Reference Standard

N-Des(2-(2-ethoxy)phenoxy)ethyl)-N-(2-(2-ethoxy)phenoxy)acetyl) Tamsulosin chemical structure

N-Des(2-(2-ethoxy)phenoxy)ethyl)-N-(2-(2-ethoxy)phenoxy)acetyl) Tamsulosin

CAS: 133261-17-3
Formula: C₂₀H₂₆N₂O₆S
MW: 422.5 g/mol

VQ-042362

Reference Standard

N-Des[2-(2-Hydroxyethoxy) Ethyl] Quetiapine-d8 chemical structure

N-Des[2-(2-Hydroxyethoxy) Ethyl] Quetiapine-d8

CAS: 1189866-35-0
Formula: C₁₇H₁₇N₃S
MW: 303.5 g/mol

VQ-043399

Reference Standard

N-Desacetyl 3-Demethyl Thiocolchicine chemical structure

N-Desacetyl 3-Demethyl Thiocolchicine

CAS: 97043-09-9
Formula: C₁₉H₂₁NO₄S
MW: 359.4 g/mol

VQ-042494

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