Description

Guaisteine CAS NO 103181-72-2 is a synthetic chemical compound primarily utilized as a key pharmaceutical intermediate. Its value lies in its role as a precursor in the synthesis of advanced active pharmaceutical ingredients (APIs), particularly those targeting respiratory conditions. This product is essential for manufacturers in the pharmaceutical and fine chemical industries requiring high-purity building blocks for drug development and production.

Application

• Pharmaceutical Intermediate: A critical building block in the synthesis of novel mucolytic and expectorant agents.
• API Synthesis: Used in the production chain of Active Pharmaceutical Ingredients (APIs) for respiratory therapeutics.
• Research & Development: Serves as a standard or starting material in medicinal chemistry research for developing new drug candidates.
• Fine Chemical Production: Employed in the manufacture of other specialized, high-value sulfur-containing organic compounds.

Basic Information

Product Name	Guaisteine
CAS No.	103181-72-2
Molecular Formula	C5H9NO3S
Molecular Weight	163.19 g/mol
Synonyms	Guaiacol Glyceryl Ether Thioglycolate; Guaifenesin Thioglycolate; 3-(2-Methoxyphenoxy)-1,2-propanediol 1-Thioglycolate; Guaiphenesin Thioglycolate; Thioglycolic Acid Ester with Guaifenesin; 1,2-Propanediol, 3-(2-methoxyphenoxy)-, 1-(carboxymethylthio)-; Guaisteine (INN)
EINECS	Contact for details

Quality Control

Our Guaisteine is produced under strict quality management systems. Each batch undergoes comprehensive analytical testing to ensure it meets high-purity standards suitable for pharmaceutical intermediate applications. A Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with every shipment to guarantee traceability and compliance.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at controlled room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed to minimize exposure to atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 98.5%
Related Substances (HPLC)	Total impurities ≤ 1.5% Any single impurity ≤ 0.5%
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.1%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.