O-Methyl 3-oxopyrazolidine-1-carbothioate CAS 51356-41-3

Purity 97%+In StockPharmaceutical Standards
CAS No.51356-41-3
Molecular FormulaC5H8N2O2S
Molecular Weight160.19 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

O-Methyl 3-oxopyrazolidine-1-carbothioate CAS 51356-41-3 chemical structure

Description

Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.

O-Methyl 3-oxopyrazolidine-1-carbothioate (CAS 51356-41-3), molecular formula C5H8N2O2S and molecular weight 160.19 g/mol, is a CATO reference standard with documented purity and traceability.

Owing to an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, O-Methyl 3-oxopyrazolidine-1-carbothioate is typically white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 160.19 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.

The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.

Physical & Chemical Properties

Molecular FormulaC5H8N2O2S
Molecular Weight160.19 g/mol
Purity97%+
StorageStore at 2-8°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)3.0
UV AbsorptionUV-absorbing
CAS Registry Year (est.)1971
Nitrogen Atoms2
Sulfur Atoms1

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Why CATO?