Impurity reference standards
Riociguat impurity standards
This page brings together 24 Riociguat related compounds that analytical teams use to identify, quantify and control impurities in the active ingredient and the finished dosage form. The range includes 4 pharmacopoeial impurities and 1 metabolite or hydroxylated analogue.
24reference materials
4pharmacopoeial
1metabolites
Batches are supplied with a certificate of analysis, and the supporting spectra can be sent ahead of a purchase order so your QA team can review them. Typical uses are method development and validation, relative response factor work, forced degradation studies and the impurity sections of ANDA, DMF or CEP filings.
By impurity type
Pharmacopoeial4EP, USP, BP or JP named impurities
Metabolites1Hydroxy, desmethyl and conjugated forms
Counts are based on product names. One compound can fall into more than one type.
All Riociguat reference materials
1–24 of 24 standards
(E)-2-(1-(2-Fluorobenzyl)-1H-pyrazolo[3,4-b]pyridin-3-yl)-5-(phenyldiazenyl)pyrimidine-4,6-diamine
- CAS
- 370879-49-5
- Formula
- C23H18FN9
- MW
- 439.4 g/mol
ZX-036117
1-(2-Fluorobenzyl)-1H-pyrazolo[3,4-b]pyridine-3-carbonitrile
- CAS
- 256376-65-5
- Formula
- C14H9FN4
- MW
- 252.25 g/mol
ZX-032206
1-(2-Fluorobenzyl)-1H-pyrazolo[3,4-b]pyridine-3-carboxamide
- CAS
- 256376-62-2
- Formula
- C14H11FN4O
- MW
- 270.26 g/mol
ZX-032205
1-(2-Fluorobenzyl)-1H-pyrazolo[3,4-b]pyridine-3-carboxylic Acid Ethyl Ester
- CAS
- 256376-59-7
- Formula
- C16H14FN3O2
- MW
- 299.3 g/mol
ZX-032210
2-(1-(2-Fluorobenzyl)-1H-pyrazolo[3,4-b]pyridin-3-yl)-5-(phenyldiazenyl)pyrimidine-4,6-diamine
- CAS
- 428854-23-3
- Formula
- C23H18FN9
- MW
- 439.4 g/mol
ZX-044060
2,2,2-Trifluoro-1-(2-fluoropyridin-3-yl)ethan-1-one
- CAS
- 1186608-79-6
- Formula
- C7H3F4NO
- MW
- 193.1 g/mol
ZX-041268
6-Amino-2-(1-(2-fluorobenzyl)-1H-pyrazolo[3,4-b]pyridin-3-yl)-7-methyl-7H-purin-8(9H)-one
- CAS
- 1361569-18-7
- Formula
- C19H15FN8O
- MW
- 390.4 g/mol
ZX-026735
6-Amino-2-(1-(2-fluorobenzyl)-1H-pyrazolo[3,4-b]pyridin-3-yl)-7,9-dimethyl-7,9-dihydro-8H-purin-8-one
- CAS
- 1361569-23-4
- Formula
- C20H17FN8O
- MW
- 404.4 g/mol
ZX-032204
6-Amino-2-[1-[(2-fluorophenyl)methyl]-1H-pyrazolo[3,4-b]pyridin-3-yl]-7,9-dihydro-8H-purin-8-one
- CAS
- 1361569-10-9
- Formula
- C18H13FN8O
- MW
- 376.3 g/mol
ZX-026734
Methyl 1-[(2-Fluorophenyl)methyl]pyrazolo[3,4-b]pyridine-3-carboximidate
- CAS
- 304874-06-4
- Formula
- C15H13FN4O
- MW
- 284.29 g/mol
ZX-026737
Questions
Riociguat impurities, answered
What Riociguat reference materials are available?
The catalogue currently lists 24 compounds for Riociguat, including 4 pharmacopoeial impurities and 1 metabolite or hydroxylated analogue. Each product page shows the CAS number where one is assigned, the structure, formula and molecular weight.
What documents come with a Riociguat impurity standard?
A certificate of analysis travels with every lot. On request we share the characterisation set, usually 1H-NMR, mass spectrum, HPLC purity and IR, and for some materials TGA or water content. Ask for the data before ordering if your QA team needs to review it.
Can Zemixal make a Riociguat impurity that is not listed?
Often yes. Send the structure, name or CAS number with the quantity you need and our sourcing team checks custom synthesis options, usually from 10 mg up to gram scale, with a quoted lead time.