637-89-8 Hydroquinone, monothio- p-Mercaptophenol Phenol, p-mercapto- (8CI) Phenol, 4-mercapto- (9CI) Phenol, 4-mercapto- 4-06-00-05790 (Beilstein Handbook Reference) AI3-32249 BRN 2039306 EINECS 211-307-6 4-Hydroxybenzenethiol p-Hydroxythiophenol 4-Hydroxythiophenol 4-Mercaptophenol Monothiohydroquinone NSC 46192 Thiohydroquinone USAF B-57 CAS 637-89-8

Purity 97%+In StockPharmaceutical Standards
CAS No.637-89-8
Molecular FormulaC6H12OS
Molecular Weight132.22 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

637-89-8 Hydroquinone, monothio- p-Mercaptophenol Phenol, p-mercapto- (8CI) Phenol, 4-mercapto- (9CI) Phenol, 4-mercapto- 4-06-00-05790 (Beilstein Handbook Reference) AI3-32249 BRN 2039306 EINECS 211-307-6 4-Hydroxybenzenethiol p-Hydroxythiophenol 4-Hydroxythiophenol 4-Mercaptophenol Monothiohydroquinone NSC 46192 Thiohydroquinone USAF B-57 CAS 637-89-8 chemical structure

Description

CATO manufactures 637-89-8 Hydroquinone, monothio- p-Mercaptophenol Phenol, p-mercapto- (8CI) Phenol, 4-mercapto- (9CI) Phenol, 4-mercapto- 4-06-00-05790 (Beilstein Handbook Reference) AI3-32249 BRN 2039306 EINECS 211-307-6 4-Hydroxybenzenethiol p-Hydroxythiophenol 4-Hydroxythiophenol 4-Mercaptophenol Monothiohydroquinone NSC 46192 Thiohydroquinone USAF B-57 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.

637-89-8 Hydroquinone, monothio- p-Mercaptophenol Phenol, p-mercapto- (8CI) Phenol, 4-mercapto- (9CI) Phenol, 4-mercapto- 4-06-00-05790 (Beilstein Handbook Reference) AI3-32249 BRN 2039306 EINECS 211-307-6 4-Hydroxybenzenethiol p-Hydroxythiophenol 4-Hydroxythiophenol 4-Mercaptophenol Monothiohydroquinone NSC 46192 Thiohydroquinone USAF B-57 (CAS 637-89-8), molecular formula C6H12OS and molecular weight 132.22 g/mol, is a CATO reference standard with documented purity and traceability.

The molecular framework of 637-89-8 Hydroquinone, monothio- p-Mercaptophenol Phenol, p-mercapto- (8CI) Phenol, 4-mercapto- (9CI) Phenol, 4-mercapto- 4-06-00-05790 (Beilstein Handbook Reference) AI3-32249 BRN 2039306 EINECS 211-307-6 4-Hydroxybenzenethiol p-Hydroxythiophenol 4-Hydroxythiophenol 4-Mercaptophenol Monothiohydroquinone NSC 46192 Thiohydroquinone USAF B-57 (C6H12OS) is characterized by sulfur-containing functionality, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development.

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.

Physical & Chemical Properties

Molecular FormulaC6H12OS
Molecular Weight132.22 g/mol
Purity97%+
StorageStore at 2-8°C
Solubility (reference)Soluble in methanol, acetonitrile, DMSO, water (slightly soluble)
StabilityStable under recommended storage conditions
Degree of Unsaturation (DBE)1.0
CAS Registry Year (est.)1957
Sulfur Atoms1

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