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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

Nizatidine EP Impurity I chemical structure

Nizatidine EP Impurity I

CAS: 82586-81-0
Formula: C₁₁H₂₀N₄OS₂
MW: 288.4 g/mol

VQ-032201

Reference Standard

Nizatidine EP Impurity J chemical structure

Nizatidine EP Impurity J

CAS: 78441-69-7
Formula: C₇H₁₂N₂OS
MW: 172.25 g/mol

VQ-026939

Reference Standard

Nizatidine Impurity X

Nizatidine Impurity X

CAS: 1193434-64-8
Formula: C₁₉H₃₁N₇O₂S₃
MW: 485.68 g/mol

VQ-032199

Reference Standard

Nizatidine-d3 chemical structure

CAS: 1246833-99-7
Formula: C₁₂H₂₁N₅O₂S₂
MW: 334.5 g/mol

VQ-032202

Reference Standard

Nomegestrol chemical structure

CAS: 58691-88-6
Formula: C₂₁H₂₈O₃
MW: 328.4 g/mol

VQ-023274

Reference Standard

Nomegestrol 6-Formyl Impurity

Nomegestrol 6-Formyl Impurity

CAS: 147508-40-5
Formula: C₂₅H₃₄O₅
MW: 414.5 g/mol

VQ-028953

Reference Standard

Nomegestrol acetate chemical structure

Nomegestrol acetate

CAS: 58652-20-3
Formula: C₂₃H₃₀O₄
MW: 370.5 g/mol

VQ-023275

Reference Standard

Nomegestrol Acetate 6-Hydroxy Impurity chemical structure

Nomegestrol Acetate 6-Hydroxy Impurity

CAS: 147508-44-9
Formula: C₂₃H₃₀O₅
MW: 386.5 g/mol

VQ-035101

Reference Standard

Nomegestrol Acetate EP Impurity A chemical structure

Nomegestrol Acetate EP Impurity A

CAS: 32420-14-7
Formula: C₂₃H₃₂O₄
MW: 372.5 g/mol

VQ-023276

Reference Standard

Non-4-enedioic Acid

Non-4-enedioic Acid

CAS: 1002-20-6
Formula: C₉H₁₄O₄
MW: 186.21 g/mol

VQ-047510

Reference Standard

Nonaethylene glycol monotridecyl ether chemical structure

Nonaethylene glycol monotridecyl ether

CAS: 7300-80-3
Formula: C₃₁H₆₄O₁₀
MW: 596.8 g/mol

VQ-041050

Reference Standard

Nonivamide dimer impurity chemical structure

Nonivamide dimer impurity

CAS: 859171-95-2
Formula: C₃₄H₅₂N₂O₆
MW: 584.8 g/mol

VQ-045343

Reference Standard

Nonoxynol 9 chemical structure

CAS: 14409-72-4
Formula: C₃₃H₆₀O₁₀
MW: 616.8 g/mol

VQ-040238

Reference Standard

Nonylphenol chemical structure

CAS: 84852-15-3
Formula: C₁₅H₂₄O
MW: 220.35 g/mol

VQ-039769

Reference Standard

Noopept chemical structure

CAS: 157115-85-0
Formula: C₁₇H₂₂N₂O₄
MW: 318.4 g/mol

VQ-039976

Reference Standard

Nor Cholic Acid chemical structure

Nor Cholic Acid

CAS: 60696-62-0
Formula: C₂₃H₃₈O₅
MW: 394.5 g/mol

VQ-036235

Reference Standard

Nor Verapamil-d6 Hydrochloride chemical structure

Nor Verapamil-d6 Hydrochloride

CAS: 1329651-21-9
Formula: C₂₆H₃₇ClN₂O₄
MW: 483.1 g/mol

VQ-034589

Reference Standard

Nor-Desoxycholic Acid chemical structure

Nor-Desoxycholic Acid

CAS: 53608-86-9
Formula: C₂₃H₃₈O₄
MW: 378.5 g/mol

VQ-030122

Reference Standard

Noradrenaline chemical structure

CAS: 51-41-2
Formula: C₈H₁₁NO₃
MW: 169.18 g/mol

VQ-020744

Reference Standard

Noradrenaline bitartrate chemical structure

Noradrenaline bitartrate

CAS: 69815-49-2
Formula: C₁₂H₁₉NO₁₀
MW: 337.28 g/mol

VQ-038678

Reference Standard

Noradrenaline Tartrate chemical structure

Noradrenaline Tartrate

CAS: 51-40-1
Formula: C₁₂H₁₇NO₉
MW: 319.26 g/mol

VQ-026949

Reference Standard

Noradrenalone EP Impurity B (Freebase) chemical structure

Noradrenalone EP Impurity B (Freebase)

CAS: 499-61-6
Formula: C₈H₉NO₃
MW: 167.16 g/mol

VQ-006547

Reference Standard

Noradrenalone EP Impurity B (Hydrochloride Salt) chemical structure

Noradrenalone EP Impurity B (Hydrochloride Salt)

CAS: 5090-29-9
Formula: C₈H₁₀ClNO₃
MW: 203.62 g/mol

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Reference Standard

Noradrenochrome chemical structure

Noradrenochrome

CAS: 490-89-1
Formula: C₈H₇NO₃
MW: 165.15 g/mol

VQ-026947

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