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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

Alcophosphamide chemical structure

Alcophosphamide

CAS: 52336-54-6
Formula: C₇H₁₇Cl₂N₂O₃P
MW: 279.1 g/mol

VQ-029954

Reference Standard

Alcophosphamide chemical structure

Alcophosphamide

CAS: 1566-15-0
Formula: C₁₀H₂₄Cl₂N₃O₂P
MW: 320.19 g/mol

VQ-036471

Reference Standard

Aldosterone chemical structure

CAS: 52-39-1
Formula: C₂₁H₂₈O₅
MW: 360.4 g/mol

VQ-035646

Reference Standard

Aldosterone 21-Acetate chemical structure

Aldosterone 21-Acetate

CAS: 2827-21-6
Formula: C₂₃H₃₀O₆
MW: 402.5 g/mol

VQ-043033

Reference Standard

Aldox chemical structure

CAS: 45267-19-4
Formula: C₁₉H₄₀N₂O
MW: 312.5 g/mol

VQ-041025

Reference Standard

Alectinib chemical structure

CAS: 1256580-46-7
Formula: C₃₀H₃₄N₄O₂
MW: 482.6 g/mol

In stock

Reference Standard

Alectinib 2-Sulfonic Acid Impurity chemical structure

Alectinib 2-Sulfonic Acid Impurity

CAS: 2412921-45-8
Formula: C₃₀H₃₄N₄O₅S
MW: 562.7 g/mol

In stock

Reference Standard

Alectinib Hydrochloride chemical structure

Alectinib Hydrochloride

CAS: 1256589-74-8
Formula: C₃₀H₃₅ClN₄O₂
MW: 519.1 g/mol

In stock

Reference Standard

Alectinib Impurity 1 chemical structure

Alectinib Impurity 1

CAS: 1256584-80-1
Formula: C₂₁H₁₇IN₂O
MW: 440.3 g/mol

In stock

Reference Standard

Alectinib Metabolite M4 chemical structure

Alectinib Metabolite M4

CAS: 1256585-04-2
Formula: C₂₈H₃₂N₄O₂
MW: 456.6 g/mol

VQ-021482

Reference Standard

Alectinib Morpholine Nitrogen N-oxide chemical structure

Alectinib Morpholine Nitrogen N-oxide

CAS: 1256585-28-0
Formula: C₃₀H₃₄N₄O₃
MW: 498.6 g/mol

VQ-021478

Reference Standard

Alectinib Tert-butyl Indole-3-carboxylate Impurity chemical structure

Alectinib Tert-butyl Indole-3-carboxylate Impurity

CAS: 1256698-41-5
Formula: C₃₄H₄₄N₄O₃
MW: 556.7 g/mol

VQ-047358

Reference Standard

Alectinib-d6 chemical structure

CAS: 1616374-19-6
Formula: C₃₀H₃₄N₄O₂
MW: 488.7 g/mol

VQ-035652

Reference Standard

Alectinib-d8 chemical structure

CAS: 1256585-15-5
Formula: C₃₀H₃₄N₄O₂
MW: 490.7 g/mol

VQ-024189

Reference Standard

Alendronate EP Impurity B chemical structure

Alendronate EP Impurity B

CAS: 14265-44-2
Formula: O₄P-3
MW: 94.97 g/mol

VQ-020755

Reference Standard

Alendronate EP Impurity C chemical structure

Alendronate EP Impurity C

CAS: 14901-63-4
Formula: O₃P-3
MW: 78.97 g/mol

VQ-020757

Reference Standard

Alendronic Acid chemical structure

Alendronic Acid

CAS: 66376-36-1
Formula: C₄H₁₃NO₇P₂
MW: 249.1 g/mol

VQ-021483

Reference Standard

Alendronic Acid Dimeric Anhydride chemical structure

Alendronic Acid Dimeric Anhydride

CAS: 165043-20-9
Formula: C₈H₂₂N₂O₁₂P₄
MW: 462.16 g/mol

VQ-028801

Reference Standard

Alendronic Acid Sodium Salt chemical structure

Alendronic Acid Sodium Salt

CAS: 129318-43-0
Formula: C₄H₁₂NNaO₇P₂
MW: 271.08 g/mol

VQ-024063

Reference Standard

Alendronic acid-d6 chemical structure

Alendronic acid-d6

CAS: 1035437-39-8
Formula: C₄H₁₃NO₇P₂
MW: 255.13 g/mol

VQ-024190

Reference Standard

Aleuritic acid chemical structure

CAS: 533-87-9
Formula: C₁₆H₃₂O₅
MW: 304.42 g/mol

VQ-039795

Reference Standard

Alfacalcidol chemical structure

CAS: 41294-56-8
Formula: C₂₇H₄₄O₂
MW: 400.6 g/mol

VQ-021484

Reference Standard

Alfacalcidol EP Impurity A chemical structure

Alfacalcidol EP Impurity A

CAS: 65445-14-9
Formula: C₂₇H₄₄O₂
MW: 400.6 g/mol

VQ-021486

Reference Standard

Alfacalcidol EP Impurity B chemical structure

Alfacalcidol EP Impurity B

CAS: 63181-13-5
Formula: C₂₇H₄₄O₂
MW: 400.6 g/mol

VQ-021485

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