P-tolylmethanethiol CAS 4498-99-1

Purity 97%+In StockPharmaceutical Standards
CAS No.4498-99-1
Molecular FormulaC8H10S
Molecular Weight138.23 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

P-tolylmethanethiol CAS 4498-99-1 chemical structure

Description

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.

P-tolylmethanethiol (CAS 4498-99-1), molecular formula C8H10S and molecular weight 138.23 g/mol, is a CATO reference standard with documented purity and traceability.

Owing to sulfur-containing functionality, an aromatic ring system, P-tolylmethanethiol is typically off-white to pale yellow liquid. Its solid-state physicochemical attributes — including a molecular weight of 138.23 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).

As a certified reference material (CRM), P-tolylmethanethiol meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.

Physical & Chemical Properties

Molecular FormulaC8H10S
Molecular Weight138.23 g/mol
Purity97%+
StorageStore at 2-8°C
Solubility (reference)Soluble in methanol, acetonitrile, DMSO
StabilityStable under recommended storage conditions
Degree of Unsaturation (DBE)4.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1958
Sulfur Atoms1

Recommended Standards

Why CATO?