Desmethyl Thiosildenafil CAS 479073-86-4

Purity >95%In StockPharmaceutical Standards
CAS No.479073-86-4
Molecular FormulaC21H28N6O3S2
Molecular Weight476.62 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

Desmethyl Thiosildenafil CAS 479073-86-4 chemical structure

Description

The occurrence of Desmethyl Thiosildenafil is closely related to a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

Desmethyl Thiosildenafil (CAS 479073-86-4) is a high-purity analytical reference standard with the molecular formula C21H28N6O3S2 and a molecular weight of 476.62 g/mol.

Structurally, Desmethyl Thiosildenafil (C21H28N6O3S2) contains a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 11.0, corresponding to approximately 11 ring(s) or double-bond equivalent(s). With a molecular weight of 476.62 g/mol, it falls into the moderately-high-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.

This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.

CATO manufactures Desmethyl Thiosildenafil under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.

Physical & Chemical Properties

Molecular FormulaC21H28N6O3S2
Molecular Weight476.62 g/mol
Purity>95%
StorageStore in a cool place (≤25°C), protect from light, keep sealed and dry
Solubility (reference)Soluble in DMSO, DMF, methanol
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)11.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)2025
Nitrogen Atoms6
Sulfur Atoms2

Related Desmethyl Standards

Recommended Standards

Why CATO?