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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

Menthone chemical structure

CAS: 89-80-5
Formula: C₁₀H₁₈O
MW: 154.25 g/mol

VQ-043364

Reference Standard

Menthyl Acetate chemical structure

Menthyl Acetate

CAS: 89-48-5
Formula: C₁₂H₂₂O₂
MW: 198.3 g/mol

VQ-043356

Reference Standard

Mephenesin chemical structure

CAS: 59-47-2
Formula: C₁₀H₁₄O₃
MW: 182.22 g/mol

In stock

Reference Standard

Mephenytoin chemical structure

CAS: 50-12-4
Formula: C₁₂H₁₄N₂O₂
MW: 218.25 g/mol

VQ-043469

Reference Standard

Mepivacaine chemical structure

CAS: 96-88-8
Formula: C₁₅H₂₂N₂O
MW: 246.35 g/mol

VQ-029541

Reference Standard

Mepivacaine EP Impurity E chemical structure

Mepivacaine EP Impurity E

CAS: 2717331-30-9
Formula: C₁₅H₂₁ClN₂O
MW: 280.79 g/mol

VQ-028871

Reference Standard

Mepivacaine Hydrochloride chemical structure

Mepivacaine Hydrochloride

CAS: 1722-62-9
Formula: C₁₅H₂₃ClN₂O
MW: 282.81 g/mol

VQ-023069

Reference Standard

Meptazinol Hydrochloride chemical structure

Meptazinol Hydrochloride

CAS: 59263-76-2
Formula: C₁₅H₂₄ClNO
MW: 269.81 g/mol

VQ-039261

Reference Standard

Mepyramine EP Impurity A chemical structure

Mepyramine EP Impurity A

CAS: 52818-63-0
Formula: C₁₃H₁₄N₂O
MW: 214.26 g/mol

VQ-023070

Reference Standard

Mepyramine maleate chemical structure

Mepyramine maleate

CAS: 59-33-6
Formula: C₂₁H₂₇N₃O₅
MW: 401.5 g/mol

VQ-026608

Reference Standard

Mepyramine N-Oxide chemical structure

Mepyramine N-Oxide

CAS: 98982-99-1
Formula: C₁₇H₂₃N₃O₂
MW: 301.4 g/mol

VQ-026609

Reference Standard

Mequitazine chemical structure

CAS: 29216-28-2
Formula: C₂₀H₂₂N₂S
MW: 322.5 g/mol

VQ-031789

Reference Standard

Mequitazine Sulfoxide N-Oxide chemical structure

Mequitazine Sulfoxide N-Oxide

CAS: 62705-13-9
Formula: C₂₀H₂₂N₂O₂S
MW: 354.5 g/mol

VQ-038310

Reference Standard

Meradimate chemical structure

CAS: 134-09-8
Formula: C₁₇H₂₅NO₂
MW: 275.4 g/mol

VQ-043465

Reference Standard

Mercaptopurine chemical structure

CAS: 50-44-2
Formula: C₅H₄N₄S
MW: 152.18 g/mol

VQ-026610

Reference Standard

Meropenem chemical structure

CAS: 96036-03-2
Formula: C₁₇H₂₅N₃O₅S
MW: 383.5 g/mol

VQ-031791

Reference Standard

Meropenem D6 chemical structure

CAS: 1217976-95-8
Formula: C₁₇H₂₅N₃O₅S
MW: 389.5 g/mol

VQ-043424

Reference Standard

Meropenem EP Impurity A chemical structure

Meropenem EP Impurity A

CAS: 1053703-36-8
Formula: C₁₇H₂₇N₃O₆S
MW: 401.5 g/mol

VQ-023072

Reference Standard

Meropenem EP Impurity B chemical structure

Meropenem EP Impurity B

CAS: 166901-45-7
Formula: C₃₄H₅₀N₆O₁₀S₂
MW: 766.9 g/mol

VQ-023073

Reference Standard

Meropenem Impurity 1 chemical structure

Meropenem Impurity 1

CAS: 90822-24-5
Formula: C₁₇H₁₈N₄O₇
MW: 390.3 g/mol

VQ-049045

Reference Standard

Meropenem sodium chemical structure

Meropenem sodium

CAS: 211238-34-5
Formula: C₁₇H₂₄N₃NaO₅S
MW: 405.4 g/mol

VQ-043636

Reference Standard

Mertansine chemical structure

CAS: 139504-50-0
Formula: C₃₅H₄₈ClN₃O₁₀S
MW: 738.3 g/mol

VQ-026612

Reference Standard

Mertansine Impurity 6 chemical structure

Mertansine Impurity 6

CAS: 1613362-80-3
Formula: C₅₁H₆₆ClN₅O₁₆S
MW: 1072.6 g/mol

VQ-038315

Reference Standard

Mesalamine degradant product I

Mesalamine degradant product I

CAS: 147396-04-1
Formula: C₁₅H₁₀N₂O₆
MW: 314.25 g/mol

VQ-038319

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