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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

Evenamide chemical structure

CAS: 1092977-61-1
Formula: C₁₆H₂₆N₂O₂
MW: 278.39 g/mol

VQ-037167

Reference Standard

Everolimus EP Impurity B chemical structure

Everolimus EP Impurity B

CAS: 1062122-63-7
Formula: C₅₃H₈₃NO₁₄
MW: 958.2 g/mol

VQ-030641

Reference Standard

Everolimus EP Impurity D chemical structure

Everolimus EP Impurity D

CAS: 2760174-96-5
Formula: C₅₃H₈₃NO₁₄
MW: 958.2 g/mol

VQ-030644

Reference Standard

Everolimus EP Impurity E chemical structure

Everolimus EP Impurity E

CAS: 1237826-25-3
Formula: C₅₂H₇₉NO₁₄
MW: 942.2 g/mol

VQ-030638

Reference Standard

Everolimus IP Impurity E chemical structure

Everolimus IP Impurity E

CAS: 147438-30-0
Formula: C₃₂H₄₉NO₉
MW: 591.7 g/mol

VQ-025683

Reference Standard

Everolimus Isomer C chemical structure

Everolimus Isomer C

CAS: 908340-97-6
Formula: C₅₃H₈₃NO₁₄
MW: 958.2 g/mol

VQ-030642

Reference Standard

Everolimus O-Ethyl Impurity chemical structure

Everolimus O-Ethyl Impurity

CAS: 1704711-12-5
Formula: C₅₄H₈₅NO₁₄
MW: 972.2 g/mol

VQ-025684

Reference Standard

Everolimus Ring Opening Impurity chemical structure

Everolimus Ring Opening Impurity

CAS: 1708118-13-1
Formula: C₅₃H₈₃NO₁₄
MW: 958.2 g/mol

VQ-030637

Reference Standard

Everolimus-13C2-D4 chemical structure

Everolimus-13C2-D4

CAS: 1661009-29-5
Formula: C₅₃H₈₃NO₁₄
MW: 964.2 g/mol

VQ-048321

Reference Standard

Everolimus-d4 chemical structure

CAS: 1338452-54-2
Formula: C₅₃H₈₃NO₁₄
MW: 962.2 g/mol

VQ-037168

Reference Standard

Evobrutinib chemical structure

CAS: 1415823-73-2
Formula: C₂₅H₂₇N₅O₂
MW: 429.5 g/mol

VQ-031120

Reference Standard

Evobrutinib Advanced Benzoyl Impurity

Evobrutinib Advanced Benzoyl Impurity

CAS: 1892599-90-4
Formula: C₁₄H₁₇FN₂O₂
MW: 264.3 g/mol

VQ-048610

Reference Standard

Evocalcet chemical structure

CAS: 870964-67-3
Formula: C₂₄H₂₆N₂O₂
MW: 374.5 g/mol

VQ-030645

Reference Standard

Evogliptin chemical structure

CAS: 1222102-29-5
Formula: C₁₉H₂₆F₃N₃O₃
MW: 401.4 g/mol

VQ-025685

Reference Standard

Evogliptin Tartrate chemical structure

Evogliptin Tartrate

CAS: 1222102-51-3
Formula: C₂₃H₃₂F₃N₃O₉
MW: 551.5 g/mol

VQ-030646

Reference Standard

Evosimendan Dimer Impurity chemical structure

Evosimendan Dimer Impurity

CAS: 618458-79-0
Formula: C₃₀H₃₀N₁₂O₃
MW: 606.6 g/mol

VQ-026455

Reference Standard

Exatecan chemical structure

CAS: 171335-80-1
Formula: C₂₄H₂₂FN₃O₄
MW: 435.4 g/mol

VQ-030647

Reference Standard

Exemestane chemical structure

CAS: 107868-30-4
Formula: C₂₀H₂₄O₂
MW: 296.4 g/mol

VQ-022615

Reference Standard

Exemestane Diol Impurity chemical structure

Exemestane Diol Impurity

CAS: 184972-11-0
Formula: C₂₀H₂₆O₄
MW: 330.4 g/mol

VQ-030650

Reference Standard

Exemestane EP Impurity B chemical structure

Exemestane EP Impurity B

CAS: 184972-09-6
Formula: C₂₀H₂₆O₃
MW: 314.4 g/mol

VQ-022616

Reference Standard

Exemestane EP Impurity C chemical structure

Exemestane EP Impurity C

CAS: 2130745-60-5
Formula: C₂₁H₂₄O₂
MW: 308.4 g/mol

VQ-025687

Reference Standard

Exemestane EP Impurity E chemical structure

Exemestane EP Impurity E

CAS: 19457-55-7
Formula: C₂₀H₂₆O₂
MW: 298.4 g/mol

VQ-022618

Reference Standard

Exemestane EP Impurity F chemical structure

Exemestane EP Impurity F

CAS: 72648-46-5
Formula: C₁₉H₂₂O₃
MW: 298.4 g/mol

VQ-021222

Reference Standard

Exemestane EP Impurity H chemical structure

Exemestane EP Impurity H

CAS: 122370-91-6
Formula: C₂₀H₂₆O₂
MW: 298.4 g/mol

VQ-025686

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