1-(3,5-Dimethyl-1H-pyrazol-1-yl)-2-(5-(p-tolylamino)-1,3,4-thiadiazol-2-yl)ethan-1-one CAS 1326902-49-1

Purity 97%+In StockPharmaceutical Standards
CAS No.1326902-49-1
Molecular FormulaC16H17N5OS
Molecular Weight327.40 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

1-(3,5-Dimethyl-1H-pyrazol-1-yl)-2-(5-(p-tolylamino)-1,3,4-thiadiazol-2-yl)ethan-1-one CAS 1326902-49-1 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 327.40 g/mol gives 1-(3,5-Dimethyl-1H-pyrazol-1-yl)-2-(5-(p-tolylamino)-1,3,4-thiadiazol-2-yl)ethan-1-one distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

1-(3,5-Dimethyl-1H-pyrazol-1-yl)-2-(5-(p-tolylamino)-1,3,4-thiadiazol-2-yl)ethan-1-one (CAS 1326902-49-1), molecular formula C16H17N5OS and molecular weight 327.40 g/mol, is a CATO reference standard with documented purity and traceability.

The molecular framework of 1-(3,5-Dimethyl-1H-pyrazol-1-yl)-2-(5-(p-tolylamino)-1,3,4-thiadiazol-2-yl)ethan-1-one (C16H17N5OS) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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.

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 FormulaC16H17N5OS
Molecular Weight327.40 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)11.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1991
Nitrogen Atoms5
Sulfur Atoms1

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