2-Chloro-5-methylbenzenethiol CAS 856352-61-9

Purity 97%+In StockPharmaceutical Standards
CAS No.856352-61-9
Molecular FormulaC7H7ClS
Molecular Weight158.65 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

2-Chloro-5-methylbenzenethiol CAS 856352-61-9 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 158.65 g/mol gives 2-Chloro-5-methylbenzenethiol distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

2-Chloro-5-methylbenzenethiol (CAS 856352-61-9) is a high-purity analytical reference standard with the molecular formula C7H7ClS and a molecular weight of 158.65 g/mol.

Structurally, 2-Chloro-5-methylbenzenethiol (C7H7ClS) contains sulfur-containing functionality, chlorine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 158.65 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

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.

As a certified reference material (CRM), 2-Chloro-5-methylbenzenethiol 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 FormulaC7H7ClS
Molecular Weight158.65 g/mol
Purity97%+
StorageStore at 2-8°C, keep tightly closed to prevent evaporation
Solubility (reference)Soluble in methanol, acetonitrile, DMSO
StabilityMay oxidize slowly on prolonged air exposure
Degree of Unsaturation (DBE)4.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1987
Halogen ContentCl-containing
Sulfur Atoms1

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