Description

(S)-Dimethyl Oxybutynin Hcl is a high-purity, single-enantiomer active pharmaceutical ingredient (API) and key intermediate. This compound matters for its critical role in the synthesis and development of enantiomerically pure pharmaceuticals, ensuring superior pharmacological activity and reduced side-effect profiles. It is primarily needed by pharmaceutical manufacturers and research institutions focused on urological and anticholinergic drug development, as well as by fine chemical suppliers serving the life sciences sector.

Application

• Pharmaceutical API Synthesis: As a key chiral building block for the production of enantiopure oxybutynin and related antimuscarinic agents.
• Research & Development: For pharmacological studies, metabolic pathway investigation, and the development of new drug formulations targeting overactive bladder and similar conditions.
• Reference Standard: Used as a high-purity standard in analytical laboratories for method development, validation, and quality control testing of pharmaceutical products.
• Process Chemistry: Serves as a critical intermediate in optimizing and scaling up synthetic routes for cost-effective and compliant API manufacturing.
• Contract Manufacturing: Supplied to CDMOs (Contract Development and Manufacturing Organizations) for the production of finished dosage forms under cGMP.

Basic Information

Product Name	(S)-Dimethyl Oxybutynin Hcl
CAS No.	633-20-5
Molecular Formula	C22H31NO3 • HCl
Molecular Weight	393.95 g/mol
Synonyms	(S)-Oxybutynin Dimethyl Ester Hydrochloride; (S)-4-(Diethylamino)but-2-ynyl 2-cyclohexyl-2-hydroxy-2-phenylacetate Dimethyl Ester Hydrochloride; (S)-α-Cyclohexyl-α-hydroxybenzenacetic Acid 4-(Diethylamino)-2-butynyl Ester Dimethyl Ester Hydrochloride; (S)-Oxybutynin HCl Dimethyl Ester; (S)-Oxybutynin Methyl Ester Hydrochloride; (S)-DEOB HCl
EINECS	Contact for details

Quality Control

Our (S)-Dimethyl Oxybutynin Hcl is manufactured and tested under strict quality systems. We provide material that meets high-purity standards suitable for pharmaceutical R&D and manufacturing. Comprehensive testing includes chiral purity, assay, and impurity profiling via advanced analytical techniques. A Certificate of Analysis (COA) detailing all specifications and test results is provided with each batch to ensure full traceability and compliance.

Storage

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

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Identification (HPLC)	Retention time matches reference standard
Assay (HPLC)	≥ 98.5%
Chiral Purity (Chiral HPLC)	≥ 99.0% (S)-enantiomer
Related Substances (HPLC)	Total impurities ≤ 1.0% Any single unknown impurity ≤ 0.5%
Residual Solvents (GC)	Complies with ICH Q3C guidelines
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%

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