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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

m-Ranolazine chemical structure

CAS: 1393717-46-8
Formula: C₂₄H₃₃N₃O₄
MW: 427.5 g/mol

VQ-043275

Reference Standard

MABA Acid chemical structure

CAS: 52980-68-4
Formula: C₁₃H₁₆N₂O₅
MW: 280.28 g/mol

VQ-007557

Reference Standard

MABA Acid (Stage-1) chemical structure

MABA Acid (Stage-1)

CAS: 2528-30-5
Formula: C₁₆H₁₅NO₄
MW: 285.29 g/mol

In stock

Reference Standard

MABA acid (Stage-1) Sodium Salt

MABA acid (Stage-1) Sodium Salt

CAS: 93960-24-8
Formula: C₁₆H₁₅NO₄.Na
MW: 308.28 g/mol

VQ-005255

Reference Standard

MABA Acid (Stage-2) chemical structure

MABA Acid (Stage-2)

CAS: 101810-82-6
Formula: C₂₃H₂₆N₂O₇
MW: 442.5 g/mol

In stock

Reference Standard

MABA Acid Ethyl Ester(R - Isomer) chemical structure

MABA Acid Ethyl Ester(R - Isomer)

CAS: 51865-66-8
Formula: C₁₇H₂₄N₂O₅
MW: 336.4 g/mol

In stock

Reference Standard

MABA Acid(sodium Salt) chemical structure

MABA Acid(sodium Salt)

CAS: 57444-71-0
Formula: C₁₃H₁₄N₂Na₂O₅
MW: 324.24 g/mol

In stock

Reference Standard

Mabuterol chemical structure

CAS: 56341-08-3
Formula: C₁₃H₁₈ClF₃N₂O
MW: 310.74 g/mol

VQ-038233

Reference Standard

Mabuterol D9 Hydrochloride chemical structure

Mabuterol D9 Hydrochloride

CAS: 1353867-83-0
Formula: C₁₃H₁₉Cl₂F₃N₂O
MW: 356.26 g/mol

VQ-048998

Reference Standard

Mabuterol hydrochloride chemical structure

Mabuterol hydrochloride

CAS: 54240-36-7
Formula: C₁₃H₁₉Cl₂F₃N₂O
MW: 347.2 g/mol

VQ-038234

Reference Standard

Macimorelin Acetate chemical structure

Macimorelin Acetate

CAS: 945212-59-9
Formula: C₂₈H₃₄N₆O₅
MW: 534.6 g/mol

VQ-038237

Reference Standard

Macitentan chemical structure

CAS: 441798-33-0
Formula: C₁₉H₂₀Br₂N₆O₄S
MW: 588.3 g/mol

VQ-026547

Reference Standard

Macitentan ACT-373898 chemical structure

Macitentan ACT-373898

CAS: 1433875-14-9
Formula: C₁₅H₁₇BrN₄O₅S
MW: 445.3 g/mol

VQ-026550

Reference Standard

Macitentan Impurity C chemical structure

Macitentan Impurity C

CAS: 441798-36-3
Formula: C₁₉H₂₀BrClN₆O₄S
MW: 543.8 g/mol

VQ-023021

Reference Standard

Macitentan Impurity H chemical structure

Macitentan Impurity H

CAS: 2300968-85-6
Formula: C₁₉H₂₂N₆O₄S
MW: 430.5 g/mol

VQ-049000

Reference Standard

Macitentan n-butyl analogue chemical structure

Macitentan n-butyl analogue

CAS: 556797-16-1
Formula: C₂₀H₂₁Br₂N₅O₄S
MW: 587.3 g/mol

VQ-038238

Reference Standard

Macitentan Stage-I Hydroxy Impurity chemical structure

Macitentan Stage-I Hydroxy Impurity

CAS: 2365406-85-3
Formula: C₁₃H₁₅BrN₄O₃S
MW: 387.25 g/mol

VQ-023022

Reference Standard

Macitentan Sulfamide Dimer chemical structure

Macitentan Sulfamide Dimer

CAS: 2089065-77-8
Formula: C₂₈H₃₂Br₂N₈O₆S₂
MW: 800.5 g/mol

VQ-021267

Reference Standard

Macitentan Tert-butoxypyrimidine Impurity chemical structure

Macitentan Tert-butoxypyrimidine Impurity

CAS: 121487-13-6
Formula: C₈H₁₁BrN₂O
MW: 231.09 g/mol

VQ-052110

Reference Standard

Macitentan-d4 chemical structure

CAS: 1258428-05-5
Formula: C₁₉H₂₀Br₂N₆O₄S
MW: 592.3 g/mol

VQ-038241

Reference Standard

Madecassic Acid chemical structure

Madecassic Acid

CAS: 18449-41-7
Formula: C₃₀H₄₈O₆
MW: 504.7 g/mol

VQ-039101

Reference Standard

Madecassoside chemical structure

CAS: 34540-22-2
Formula: C₄₈H₇₈O₂₀
MW: 975.1 g/mol

VQ-035801

Reference Standard

Maduramicin Ammonium chemical structure

Maduramicin Ammonium

CAS: 84878-61-5
Formula: C₄₇H₈₃NO₁₇
MW: 934.2 g/mol

VQ-031710

Reference Standard

Mafenide Acetate chemical structure

Mafenide Acetate

CAS: 13009-99-9
Formula: C₉H₁₄N₂O₄S
MW: 246.29 g/mol

VQ-049002

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