Skip to content

Product division

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

Hydroxy Ebastine chemical structure

Hydroxy Ebastine

CAS: 210686-41-2
Formula: C₃₂H₃₉NO₃
MW: 485.7 g/mol

VQ-025459

Reference Standard

Hydroxy famciclovir chemical structure

Hydroxy famciclovir

CAS: 172645-79-3
Formula: C₁₄H₁₉N₅O₅
MW: 337.33 g/mol

VQ-037194

Reference Standard

Hydroxy Flutamide chemical structure

Hydroxy Flutamide

CAS: 52806-53-8
Formula: C₁₁H₁₁F₃N₂O₄
MW: 292.21 g/mol

VQ-030832

Reference Standard

Hydroxy Gliclazide chemical structure

Hydroxy Gliclazide

CAS: 87368-00-1
Formula: C₁₅H₂₁N₃O₄S
MW: 339.4 g/mol

VQ-037523

Reference Standard

Hydroxy Ibuprofen chemical structure

Hydroxy Ibuprofen

CAS: 53949-54-5
Formula: C₁₃H₁₈O₃
MW: 222.28 g/mol

VQ-037632

Reference Standard

Hydroxy Iloperidone chemical structure

Hydroxy Iloperidone

CAS: 133454-55-4
Formula: C₂₄H₂₉FN₂O₄
MW: 428.5 g/mol

VQ-022826

Reference Standard

Hydroxy Ipronidazole chemical structure

Hydroxy Ipronidazole

CAS: 35175-14-5
Formula: C₇H₁₁N₃O₃
MW: 185.18 g/mol

VQ-040632

Reference Standard

Hydroxy Isosulfan blue chemical structure

Hydroxy Isosulfan blue

CAS: 2284468-92-2
Formula: C₂₇H₃₄N₂O₇S₂
MW: 562.7 g/mol

VQ-031282

Reference Standard

Hydroxy Itraconazole chemical structure

Hydroxy Itraconazole

CAS: 112559-91-8
Formula: C₃₅H₃₈Cl₂N₈O₅
MW: 721.6 g/mol

VQ-031306

Reference Standard

Hydroxy Itraconazole-d8 chemical structure

Hydroxy Itraconazole-d8

CAS: 1217516-26-1
Formula: C₃₅H₃₈Cl₂N₈O₅
MW: 729.7 g/mol

VQ-037772

Reference Standard

Hydroxy Ivabradine chemical structure

Hydroxy Ivabradine

CAS: 1235547-07-5
Formula: C₁₅H₂₁NO₄
MW: 279.33 g/mol

VQ-026261

Reference Standard

Hydroxy Ivabradine chemical structure

Hydroxy Ivabradine

CAS: 2253977-80-7
Formula: C₂₇H₃₆N₂O₆
MW: 484.6 g/mol

VQ-031328

Reference Standard

Hydroxy Loxoprofen chemical structure

Hydroxy Loxoprofen

CAS: 83599-40-0
Formula: C₁₅H₂₀O₃
MW: 248.32 g/mol

VQ-038181

Reference Standard

Hydroxy Medetomidine chemical structure

Hydroxy Medetomidine

CAS: 86347-12-8
Formula: C₁₃H₁₆N₂O
MW: 216.28 g/mol

VQ-026579

Reference Standard

Hydroxy Metronidazole chemical structure

Hydroxy Metronidazole

CAS: 4812-40-2
Formula: C₆H₉N₃O₄
MW: 187.15 g/mol

VQ-026669

Reference Standard

Hydroxy Metronidazole D4 chemical structure

Hydroxy Metronidazole D4

CAS: 1215071-08-1
Formula: C₆H₉N₃O₄
MW: 191.18 g/mol

VQ-038387

Reference Standard

Hydroxy Metronidazole-d2 chemical structure

Hydroxy Metronidazole-d2

CAS: 2196180-19-3
Formula: C₆H₉N₃O₄
MW: 189.17 g/mol

VQ-031862

Reference Standard

Hydroxy O-Demethyl Apixaban chemical structure

Hydroxy O-Demethyl Apixaban

CAS: 2204368-56-7
Formula: C₂₄H₂₃N₅O₅
MW: 461.5 g/mol

VQ-024328

Reference Standard

Hydroxy O-Demethyl Apixaban Sulfate chemical structure

Hydroxy O-Demethyl Apixaban Sulfate

CAS: 2203515-00-6
Formula: C₂₄H₂₃N₅O₈S
MW: 541.5 g/mol

VQ-043042

Reference Standard

Hydroxy Pentoxifylline chemical structure

Hydroxy Pentoxifylline

CAS: 6493-06-7
Formula: C₁₃H₂₀N₄O₃
MW: 280.32 g/mol

VQ-041399

Reference Standard

Hydroxy Pioglitazone (M-IV) chemical structure

Hydroxy Pioglitazone (M-IV)

CAS: 146062-44-4
Formula: C₁₉H₂₀N₂O₄S
MW: 372.4 g/mol

VQ-021310

Reference Standard

Hydroxy Timolol Impurity

Hydroxy Timolol Impurity

CAS: 57519-98-9
Formula: C₁₃H₂₄N₄O₄S
MW: 332.42 g/mol

VQ-034279

Reference Standard

Hydroxy Tolbutamide chemical structure

Hydroxy Tolbutamide

CAS: 5719-85-7
Formula: C₁₂H₁₈N₂O₄S
MW: 286.35 g/mol

VQ-042590

Reference Standard

Hydroxy Torsemide chemical structure

Hydroxy Torsemide

CAS: 99300-68-2
Formula: C₁₆H₂₀N₄O₄S
MW: 364.4 g/mol

VQ-034370

Need a price, a spec or a custom compound?

Send us your list — product names or CAS numbers, grade, quantity and destination. Our team replies with a formal quotation, COA and lead time.

Request a quote Contact sales