Description

Omonasteine is a synthetic organic compound with specific mucolytic and antioxidant properties, widely recognized in the pharmaceutical industry. Its primary value lies in its ability to modulate mucus viscosity and protect against oxidative stress in respiratory pathways. This makes it a critical active pharmaceutical ingredient (API) for manufacturers developing advanced respiratory therapeutics and expectorant formulations.

Application

• Pharmaceutical API: Primary use as the active ingredient in prescription and over-the-counter mucolytic medications for treating chronic bronchitis, COPD, and other respiratory conditions with excessive mucus.
• Expectorant Formulations: Key component in syrups, tablets, and effervescent preparations designed to loosen and clear bronchial secretions.
• Antioxidant Therapy: Incorporated into therapeutic regimens aimed at reducing oxidative damage in pulmonary tissues.
• Veterinary Pharmaceuticals: Used in respiratory treatments for animals, particularly in livestock and companion animal care.
• Clinical Research: Serves as a reference standard and raw material in pharmacological studies and new drug development (NDD) for respiratory diseases.
• Advanced Drug Delivery Systems: Utilized in the development of controlled-release, inhaled, or nano-formulations for targeted pulmonary delivery.

Basic Information

Product Name	Omonasteine
CAS No.	60175-95-3
Molecular Formula	C9H14N2O3S
Molecular Weight	230.28 g/mol
Synonyms	N-(2-Mercapto-2-methylpropionyl)-L-cysteine; S-Carboxymethylcysteine S-oxide; Domiodol; OMU; L-Cysteine, S-(carboxymethyl)-, S-oxide; Fulgamin; Mucofan; Mucopront; S-Carboxymethyl-L-cysteine S-oxide
EINECS	262-085-1

Quality Control

Our Omonasteine is manufactured under strict quality management systems, targeting purity levels suitable for pharmaceutical applications. Each batch is tested against rigorous in-house specifications, which typically include identity confirmation, assay, and control of related substances and residual solvents. A comprehensive Certificate of Analysis (COA) documenting results for all critical parameters is provided with every shipment to ensure full traceability and compliance with cGMP guidelines.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed after opening to prevent moisture absorption, which can affect stability and handling properties.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Identification (HPLC)	Retention time corresponds to reference standard
Assay (HPLC)	98.0% - 102.0% (on anhydrous basis)
Related Substances (HPLC)	Total impurities ≤ 2.0% Any single unknown impurity ≤ 0.5%
Water Content (KF)	≤ 1.0%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 20 ppm
Residual Solvents (GC)	Complies with ICH Q3C guidelines
Specific Rotation	-90° to -100° (c=1 in water)

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