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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

Riociguat D6 chemical structure

CAS: 1304478-43-0
Formula: C₂₀H₁₉FN₈O₂
MW: 428.5 g/mol

VQ-041923

Reference Standard

Riociguat EP Impurity A chemical structure

Riociguat EP Impurity A

CAS: 625115-52-8
Formula: C₁₉H₁₇FN₈O₂
MW: 408.4 g/mol

VQ-023639

Reference Standard

Riociguat EP Impurity B chemical structure

Riociguat EP Impurity B

CAS: 3052969-92-0
Formula: C₂₀H₂₀N₈O₂
MW: 404.4 g/mol

VQ-033558

Reference Standard

Riociguat EP Impurity D chemical structure

Riociguat EP Impurity D

CAS: 625115-54-0
Formula: C₂₂H₂₃FN₈O₂
MW: 450.5 g/mol

VQ-023640

Reference Standard

Riociguat Impurtiy 6 chemical structure

Riociguat Impurtiy 6

CAS: 1702271-98-4
Formula: C₁₈H₁₇FN₈
MW: 364.4 g/mol

VQ-023638

Reference Standard

Riociguat Metabolite M3 chemical structure

Riociguat Metabolite M3

CAS: 2298383-24-9
Formula: C₁₃H₁₄N₈O₂
MW: 314.3 g/mol

VQ-027828

Reference Standard

Riociguat N-Ethyl Impurity chemical structure

Riociguat N-Ethyl Impurity

CAS: 1361570-27-5
Formula: C₂₁H₂₁FN₈O₂
MW: 436.4 g/mol

VQ-033559

Reference Standard

Riociguat Triamino Impurity chemical structure

Riociguat Triamino Impurity

CAS: 428854-24-4
Formula: C₁₇H₁₅FN₈
MW: 350.4 g/mol

VQ-033553

Reference Standard

Riociguat USP Related Compound C chemical structure

Riociguat USP Related Compound C

CAS: 2920299-23-4
Formula: C₂₁H₂₁FN₈O₂
MW: 436.4 g/mol

In stock

Reference Standard

Riociguat-13C-D3 chemical structure

Riociguat-13C-D3

CAS: 2749393-44-8
Formula: C₂₀H₁₉FN₈O₂
MW: 426.4 g/mol

VQ-044254

Reference Standard

Ripasudil chemical structure

CAS: 223645-67-8
Formula: C₁₅H₁₈FN₃O₂S
MW: 323.4 g/mol

VQ-041926

Reference Standard

Ripasudil Monohydrochloride Dihydrate chemical structure

Ripasudil Monohydrochloride Dihydrate

CAS: 887375-67-9
Formula: C₁₅H₂₃ClFN₃O₄S
MW: 395.9 g/mol

VQ-027830

Reference Standard

Ripretinib chemical structure

CAS: 1442472-39-0
Formula: C₂₄H₂₁BrFN₅O₂
MW: 510.4 g/mol

VQ-027832

Reference Standard

Risdiplam chemical structure

CAS: 1825352-65-5
Formula: C₂₂H₂₃N₇O
MW: 401.5 g/mol

In stock

Reference Standard

Risdiplam Formyl Impurity chemical structure

Risdiplam Formyl Impurity

Formula: C₂₃H₂₃N₇O₂
MW: 429.5 g/mol

In stock

Reference Standard

Risdiplam Metabolite M1 chemical structure

Risdiplam Metabolite M1

CAS: 2250441-24-6
Formula: C₂₂H₂₃N₇O₂
MW: 417.5 g/mol

VQ-023641

Reference Standard

Risedronate EP Impurity A chemical structure

Risedronate EP Impurity A

CAS: 1486617-90-6
Formula: C₁₄H₁₈N₂O₁₂P₄
MW: 530.19 g/mol

VQ-023644

Reference Standard

Risedronate EP Impurity A (Disodium Tetrahydrate)

Risedronate EP Impurity A (Disodium Tetrahydrate)

CAS: 2922985-14-4
Formula: C₁₄H₂₀N₂NaO₁₃P₄
MW: 648.24 g/mol

VQ-041931

Reference Standard

Risedronate EP Impurity A Disodium chemical structure

Risedronate EP Impurity A Disodium

CAS: 1486466-30-1
Formula: C₁₄H₁₆N₂Na₂O₁₂P₄
MW: 574.16 g/mol

VQ-043279

Reference Standard

Risedronate EP Impurity B chemical structure

Risedronate EP Impurity B

CAS: 105462-23-5
Formula: C₇H₁₁NO₇P₂
MW: 283.11 g/mol

VQ-023642

Reference Standard

Risedronate EP Impurity C chemical structure

Risedronate EP Impurity C

CAS: 105462-25-7
Formula: C₇H₁₁NO₇P₂
MW: 283.11 g/mol

VQ-023643

Reference Standard

Risedronate Sodium EP Impurity B (Monohydrate Salt) chemical structure

Risedronate Sodium EP Impurity B (Monohydrate Salt)

CAS: 1220806-40-5
Formula: C₇H₁₃NO₈P₂
MW: 301.13 g/mol

VQ-033565

Reference Standard

Risedronate Sodium EP Impurity E chemical structure

Risedronate Sodium EP Impurity E

CAS: 75755-10-1
Formula: C₇H₁₁NO₆P₂
MW: 267.11 g/mol

VQ-023645

Reference Standard

Risedronate Sodium Hemipentahydrate chemical structure

Risedronate Sodium Hemipentahydrate

CAS: 329003-65-8
Formula: C₁₄H₃₀N₂Na₂O₁₉P₄
MW: 700.26 g/mol

VQ-033564

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