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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

Ebastine-d5 chemical structure

CAS: 1216953-13-7
Formula: C₃₂H₃₉NO₂
MW: 474.7 g/mol

VQ-036866

Reference Standard

Eberconazole chemical structure

CAS: 128326-82-9
Formula: C₁₈H₁₄Cl₂N₂
MW: 329.2 g/mol

VQ-025460

Reference Standard

Eberconazole Hydroxyderivative Impurity

Eberconazole Hydroxyderivative Impurity

CAS: 130126-89-5
Formula: C₁₅H₁₂Cl₂O
MW: 279.16 g/mol

VQ-022477

Reference Standard

Eberconazole Nitrate chemical structure

Eberconazole Nitrate

CAS: 130104-32-4
Formula: C₁₈H₁₅Cl₂N₃O₃
MW: 392.2 g/mol

VQ-036868

Reference Standard

Ecamsule chemical structure

CAS: 92761-26-7
Formula: C₂₈H₃₄O₈S₂
MW: 562.7 g/mol

VQ-030351

Reference Standard

Ecdysterone chemical structure

CAS: 5289-74-7
Formula: C₂₇H₄₄O₇
MW: 480.6 g/mol

VQ-040169

Reference Standard

Echimidine N-Oxide chemical structure

Echimidine N-Oxide

CAS: 41093-89-4
Formula: C₂₀H₃₁NO₈
MW: 413.5 g/mol

VQ-044270

Reference Standard

Echinacoside chemical structure

CAS: 82854-37-3
Formula: C₃₅H₄₆O₂₀
MW: 786.7 g/mol

VQ-039337

Reference Standard

Echinocandin B chemical structure

CAS: 54651-05-7
Formula: C₅₂H₈₁N₇O₁₆
MW: 1060.2 g/mol

VQ-034782

Reference Standard

Econazole chemical structure

CAS: 27220-47-9
Formula: C₁₈H₁₅Cl₃N₂O
MW: 381.7 g/mol

VQ-022478

Reference Standard

Econazole EP Impurity B chemical structure

Econazole EP Impurity B

CAS: 2334059-11-7
Formula: C₁₅H₁₄Cl₃NO
MW: 330.6 g/mol

VQ-022480

Reference Standard

Econazole USP Related Compound C chemical structure

Econazole USP Related Compound C

CAS: 57265-33-5
Formula: C₂₅H₁₉Cl₇N₂O
MW: 611.6 g/mol

VQ-030354

Reference Standard

Ecteinascidin 770 chemical structure

Ecteinascidin 770

CAS: 114899-80-8
Formula: C₄₀H₄₂N₄O₁₀S
MW: 770.8 g/mol

VQ-034374

Reference Standard

Ectoine chemical structure

CAS: 96702-03-3
Formula: C₆H₁₀N₂O₂
MW: 142.16 g/mol

VQ-032467

Reference Standard

Edaravone chemical structure

CAS: 89-25-8
Formula: C₁₀H₁₀N₂O
MW: 174.2 g/mol

In stock

Reference Standard

Edaravone Dimer Ethyl Impurity

Edaravone Dimer Ethyl Impurity

Formula: C₂₂H₂₂N₄O₂
MW: 374.44 g/mol

VQ-004831

Reference Standard

Edaravone Dimer Impurity

Edaravone Dimer Impurity

CAS: 82772-85-8
Formula: C₂₂H₂₂N₄O₂
MW: 374.44 g/mol

In stock

Reference Standard

Edaravone DP-2 Impurity chemical structure

Edaravone DP-2 Impurity

CAS: 122395-42-0
Formula: C₁₀H₁₀N₂O₂
MW: 190.2 g/mol

VQ-030357

Reference Standard

Edaravone Impurity 1 (Freebase) chemical structure

Edaravone Impurity 1 (Freebase)

CAS: 1242471-40-4
Formula: C₁₃H₁₆N₂O₅S
MW: 312.34 g/mol

In stock

Reference Standard

Edaravone Impurity 1 (Sodium Salt)

Edaravone Impurity 1 (Sodium Salt)

CAS: 1322767-62-3
Formula: C₁₃H₁₆N₂O₅S.Na
MW: 335.33 g/mol

VQ-004834

Reference Standard

Edaravone Impurity 12 chemical structure

Edaravone Impurity 12

CAS: 6078-46-2
Formula: C₁₂H₁₆N₂O₂
MW: 220.27 g/mol

VQ-030355

Reference Standard

Edaravone Impurity 16 chemical structure

Edaravone Impurity 16

CAS: 153952-07-9
Formula: C₂₀H₁₈N₄O₃
MW: 362.4 g/mol

In stock

Reference Standard

Edaravone Impurity 2 chemical structure

Edaravone Impurity 2

CAS: 1357477-99-6
Formula: C₁₃H₁₄N₂O₆S
MW: 326.33 g/mol

In stock

Reference Standard

Edaravone Impurity 4 chemical structure

Edaravone Impurity 4

CAS: 7477-67-0
Formula: C₂₀H₁₈N₄O₂
MW: 346.4 g/mol

In stock

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