3-Methyl-5-(methylthio)-1H-pyrazolo[4,3-d]pyrimidin-7(6H)-one CAS 28745-13-3

Purity 97%+In StockPharmaceutical Standards
CAS No.28745-13-3
Molecular FormulaC19H27NO2 HBr
Molecular WeightN/A
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

3-Methyl-5-(methylthio)-1H-pyrazolo[4,3-d]pyrimidin-7(6H)-one CAS 28745-13-3 chemical structure

Description

CATO supplies 3-Methyl-5-(methylthio)-1H-pyrazolo[4,3-d]pyrimidin-7(6H)-one (CAS 28745-13-3), a pharmaceutical standards reference standard manufactured under ISO 17034 accreditation. Molecular formula: C19H27NO2 HBr. Batch-specific COA and technical support are available on request.

Physical & Chemical Properties

Molecular FormulaC19H27NO2 HBr
Molecular Weight382.34 g/mol
AppearanceOff-white to pale yellow crystalline powder. (slight halide-like odor)
Purity97%+
StorageStore at 2-8°C, protect from light
Solubility (reference)Soluble in chloroform, dichloromethane, ethyl acetate, DMSO
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions
Degree of Unsaturation (DBE)6.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1965
Halogen ContentBr-containing
Nitrogen Atoms1

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