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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.

27,990products

6sub-categories

2,746in stock

COA + SDSwith every lot

API Impurities 14,098 Pharmacopeial Impurities (EP / USP / BP) 4,399 Nitrosamine Impurities 631 Stable Isotope Labelled Standards (Deuterated, 13C, 15N) 1,504 Metabolites & Degradation Products 3,922 API Reference Standards 3,436

Reference Standard

Stanozolol EP Impurity B chemical structure

Stanozolol EP Impurity B

CAS: 434-07-1
Formula: C₂₁H₃₂O₃
MW: 332.5 g/mol

VQ-043607

Reference Standard

Stauprimide chemical structure

CAS: 154589-96-5
Formula: C₃₅H₂₈N₄O₅
MW: 584.6 g/mol

VQ-023129

Reference Standard

Staurosporine chemical structure

CAS: 62996-74-1
Formula: C₂₈H₂₆N₄O₃
MW: 466.5 g/mol

VQ-033944

Reference Standard

Staurosporine Aglycone chemical structure

Staurosporine Aglycone

CAS: 85753-43-1
Formula: C₂₀H₁₃N₃O
MW: 311.3 g/mol

VQ-038397

Reference Standard

Stavudine chemical structure

CAS: 3056-17-5
Formula: C₁₀H₁₂N₂O₄
MW: 224.21 g/mol

VQ-023794

Reference Standard

Stearidonic Acid chemical structure

Stearidonic Acid

CAS: 20290-75-9
Formula: C₁₈H₂₈O₂
MW: 276.4 g/mol

VQ-037645

Reference Standard

Stearidonic Acid Ethyl Ester chemical structure

Stearidonic Acid Ethyl Ester

CAS: 119798-44-6
Formula: C₂₀H₃₂O₂
MW: 304.5 g/mol

VQ-032420

Reference Standard

Sterigmatocystin chemical structure

Sterigmatocystin

CAS: 10048-13-2
Formula: C₁₈H₁₂O₆
MW: 324.3 g/mol

VQ-039072

Reference Standard

Steviol chemical structure

CAS: 471-80-7
Formula: C₂₀H₃₀O₃
MW: 318.4 g/mol

VQ-039821

Reference Standard

Stigmasta-5,22-dien-3-ol, 3-tetradecanoate, (3β,22E)

Stigmasta-5,22-dien-3-ol, 3-tetradecanoate, (3β,22E)

CAS: 20242-98-2
Formula: C₄₃H₇₄O₂
MW: 623.1 g/mol

VQ-044379

Reference Standard

Stiripentol chemical structure

CAS: 49763-96-4
Formula: C₁₄H₁₈O₃
MW: 234.29 g/mol

VQ-028121

Reference Standard

Stiripentol Glucuronide chemical structure

Stiripentol Glucuronide

CAS: 88902-06-1
Formula: C₂₀H₂₆O₉
MW: 410.4 g/mol

VQ-042276

Reference Standard

Stiripentol Hydroxy dimer impurity

Stiripentol Hydroxy dimer impurity

CAS: 2098981-22-5
Formula: C₁₉H₁₆O₅
MW: 324.33 g/mol

VQ-033949

Reference Standard

Stiripentol Iso butyl Alcohol Impurity chemical structure

Stiripentol Iso butyl Alcohol Impurity

CAS: 58344-90-4
Formula: C₁₄H₁₈O₃
MW: 234.29 g/mol

VQ-042271

Reference Standard

Stiripentol Iso Butyl Keto Impurity chemical structure

Stiripentol Iso Butyl Keto Impurity

CAS: 56750-95-9
Formula: C₁₄H₁₆O₃
MW: 232.27 g/mol

VQ-042272

Reference Standard

Stiripentol Tert-Keto Impurity chemical structure

Stiripentol Tert-Keto Impurity

CAS: 78074-39-2
Formula: C₁₄H₁₈O₃
MW: 234.29 g/mol

VQ-033947

Reference Standard

Stiripentol Z-isomer

Stiripentol Z-isomer

CAS: 2548512-69-0
Formula: C₁₄H₁₈O₃
MW: 234.3 g/mol

VQ-033948

Reference Standard

Stiripentol-d9 chemical structure

CAS: 1185239-64-8
Formula: C₁₄H₁₈O₃
MW: 243.35 g/mol

VQ-033950

Reference Standard

Streptomycin A chemical structure

CAS: 57-92-1
Formula: C₂₁H₃₉N₇O₁₂
MW: 581.6 g/mol

VQ-033951

Reference Standard

Streptomycin B chemical structure

CAS: 128-45-0
Formula: C₂₇H₄₉N₇O₁₇
MW: 743.7 g/mol

VQ-033953

Reference Standard

Strontium Ranelate chemical structure

Strontium Ranelate

CAS: 135459-87-9
Formula: C₁₂H₆N₂O₈SSr₂
MW: 513.5 g/mol

VQ-042279

Reference Standard

Styrene chemical structure

CAS: 100-42-5
Formula: C₈H₈
MW: 104.15 g/mol

VQ-007765

Reference Standard

Succinaldehyde chemical structure

CAS: 638-37-9
Formula: C₄H₆O₂
MW: 86.09 g/mol

VQ-039630

Reference Standard

Succinyl Monocholine Chloride chemical structure

Succinyl Monocholine Chloride

CAS: 5297-17-6
Formula: C₉H₁₈ClNO₄
MW: 239.69 g/mol

VQ-032728

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