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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

4-Hydroxy Duloxetine chemical structure

4-Hydroxy Duloxetine

CAS: 662149-13-5
Formula: C₁₈H₁₉NO₂S
MW: 313.4 g/mol

VQ-048113

Reference Standard

4-Hydroxy Duloxetine Acetate

4-Hydroxy Duloxetine Acetate

CAS: 2705426-23-7
Formula: C₂₀H₂₃NO₄S
MW: 373.47 g/mol

VQ-030339

Reference Standard

4-Hydroxy Duloxetine β-D-Glucuronide chemical structure

4-Hydroxy Duloxetine β-D-Glucuronide

CAS: 741693-83-4
Formula: C₂₄H₂₇NO₈S
MW: 489.5 g/mol

VQ-030334

Reference Standard

4-Hydroxy Estrone chemical structure

4-Hydroxy Estrone

CAS: 3131-23-5
Formula: C₁₈H₂₂O₃
MW: 286.4 g/mol

VQ-030575

Reference Standard

4-Hydroxy Ibrutinib chemical structure

4-Hydroxy Ibrutinib

CAS: 1288339-18-3
Formula: C₂₅H₂₄N₆O₃
MW: 456.5 g/mol

VQ-048600

Reference Standard

4-Hydroxy Ketorolac chemical structure

4-Hydroxy Ketorolac

CAS: 111930-01-9
Formula: C₁₅H₁₃NO₄
MW: 271.27 g/mol

VQ-031387

Reference Standard

4-Hydroxy Midazolam chemical structure

4-Hydroxy Midazolam

CAS: 59468-85-8
Formula: C₁₈H₁₃ClFN₃O
MW: 341.8 g/mol

VQ-044840

Reference Standard

4-Hydroxy Nebivolol chemical structure

4-Hydroxy Nebivolol

CAS: 178383-76-1
Formula: C₂₂H₂₈ClF₂NO₆
MW: 475.9 g/mol

VQ-032076

Reference Standard

4-Hydroxy Nebivolol Hydrochoride chemical structure

4-Hydroxy Nebivolol Hydrochoride

CAS: 2717115-85-8
Formula: C₂₂H₂₆ClF₂NO₅
MW: 457.9 g/mol

VQ-049203

Reference Standard

4-Hydroxy Nimesulide chemical structure

4-Hydroxy Nimesulide

CAS: 109032-22-6
Formula: C₁₃H₁₂N₂O₆S
MW: 324.31 g/mol

VQ-032161

Reference Standard

4-Hydroxy Propafenone Hydrochloride chemical structure

4-Hydroxy Propafenone Hydrochloride

CAS: 86383-31-5
Formula: C₂₁H₂₈ClNO₄
MW: 393.9 g/mol

VQ-043830

Reference Standard

4-Hydroxy Propranolol -D7 Hydrochloride chemical structure

4-Hydroxy Propranolol -D7 Hydrochloride

CAS: 1219804-03-1
Formula: C₁₆H₂₂ClNO₃
MW: 318.84 g/mol

VQ-041745

Reference Standard

4-Hydroxy Propranolol Glucuronide chemical structure

4-Hydroxy Propranolol Glucuronide

CAS: 94731-13-2
Formula: C₂₂H₂₉NO₉
MW: 451.5 g/mol

VQ-033374

Reference Standard

4-Hydroxy propranolol Hydrochloride chemical structure

4-Hydroxy propranolol Hydrochloride

CAS: 14133-90-5
Formula: C₁₆H₂₂ClNO₃
MW: 311.8 g/mol

VQ-027670

Reference Standard

4-Hydroxy Raloxifene chemical structure

4-Hydroxy Raloxifene

CAS: 185416-01-7
Formula: C₂₈H₂₇NO₄S
MW: 473.6 g/mol

VQ-023605

Reference Standard

4-Hydroxy Stiripentol-13CD3

4-Hydroxy Stiripentol-13CD3

CAS: 1346606-79-8
Formula: C₁₃₁₃CH₁₇D₃O₃
MW: 240.3 g/mol

VQ-043420

Reference Standard

4-Hydroxy Toremifene chemical structure

4-Hydroxy Toremifene

CAS: 110503-62-3
Formula: C₂₆H₂₈ClNO₂
MW: 422 g/mol

VQ-042619

Reference Standard

4-Hydroxy triamterene chemical structure

4-Hydroxy triamterene

CAS: 1226-52-4
Formula: C₁₂H₁₁N₇O
MW: 269.26 g/mol

VQ-042668

Reference Standard

4-Hydroxy Triamterene Sulfate Sodium Salt chemical structure

4-Hydroxy Triamterene Sulfate Sodium Salt

CAS: 73756-87-3
Formula: C₁₂H₁₀N₇NaO₄S
MW: 371.31 g/mol

VQ-042667

Reference Standard

4-Hydroxy Tryptophol chemical structure

4-Hydroxy Tryptophol

CAS: 1379213-90-7
Formula: C₁₀H₁₁NO₂
MW: 177.2 g/mol

VQ-052394

Reference Standard

4-Hydroxy Valsartan chemical structure

4-Hydroxy Valsartan

CAS: 188259-69-0
Formula: C₂₄H₂₉N₅O₄
MW: 451.5 g/mol

VQ-028618

Reference Standard

4-Hydroxy-1-methylpyrrolidin-2-one chemical structure

4-Hydroxy-1-methylpyrrolidin-2-one

CAS: 222856-39-5
Formula: C₅H₉NO₂
MW: 115.13 g/mol

VQ-048548

Reference Standard

4-Hydroxy-1-oxo-7-phenoxy-1,2-dihydroisoquinoline-3-carboxylic Acid

4-Hydroxy-1-oxo-7-phenoxy-1,2-dihydroisoquinoline-3-carboxylic Acid

CAS: 2342600-70-6
Formula: C₁₆H₁₁NO₅
MW: 297.26 g/mol

VQ-044928

Reference Standard

4-Hydroxy-2-butenenitrile chemical structure

4-Hydroxy-2-butenenitrile

CAS: 19060-14-1
Formula: C₄H₅NO
MW: 83.09 g/mol

VQ-051577

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