3-methyl-1-phenyl-1H-pyrazole-5-thiol CAS 1131-19-7

Purity 97%+In StockPharmaceutical Standards
CAS No.1131-19-7
Molecular FormulaC10H10N2S
Molecular Weight190.26 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

3-methyl-1-phenyl-1H-pyrazole-5-thiol CAS 1131-19-7 chemical structure

Description

3-methyl-1-phenyl-1H-pyrazole-5-thiol (CAS 1131-19-7) is a high-purity analytical reference standard with the molecular formula C10H10N2S and a molecular weight of 190.26 g/mol.

Structurally, 3-methyl-1-phenyl-1H-pyrazole-5-thiol (C10H10N2S) contains a nitrogen-containing heterocyclic scaffold, a nitrile group, sulfur-containing functionality. The molecule exhibits a degree of unsaturation (DBE) of 7.0, corresponding to approximately 7 ring(s) or double-bond equivalent(s). With a molecular weight of 190.26 g/mol, it falls into the medium-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).

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

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 FormulaC10H10N2S
Molecular Weight190.26 g/mol
Purity97%+
StorageStore at 2-8°C, protect from light
Solubility (reference)Soluble in DMSO, DMF, methanol
StabilityLight-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)7.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1957
Nitrogen Atoms2
Sulfur Atoms1

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