Description

Levopropoxyphene Napsylate (300 Mg) is a high-purity pharmaceutical intermediate and active ingredient, specifically the napsylate salt form of levopropoxyphene. This compound is critical for ensuring the precise formulation and efficacy of specific therapeutic products. It is primarily required by pharmaceutical manufacturers and advanced research institutions engaged in drug development and synthesis. The product is supplied as a standardized 300 mg unit, facilitating accurate dosing and formulation consistency.

Application

• Pharmaceutical Active Ingredient (API): Serves as a key intermediate or direct component in the synthesis of specific antitussive (cough-suppressant) medications.
• Reference Standard: Used in analytical laboratories as a high-purity standard for quality control testing, method validation, and regulatory compliance.
• Pharmacological Research: Employed in preclinical and clinical studies to investigate metabolic pathways, pharmacokinetics, and receptor interactions.
• Formulation Development: Utilized in R&D for developing new drug delivery systems, dosage forms, and stability testing protocols.
• Chemical Synthesis: Acts as a chiral building block or precursor for the synthesis of more complex pharmaceutical molecules and derivatives.

Basic Information

Product Name	Levopropoxyphene Napsylate (300 Mg)
CAS No.	55557-30-7
Molecular Formula	C22H29NO2 • C10H8O3S
Molecular Weight	565.71 g/mol
Synonyms	(-)-α-4-Dimethylamino-1,2-diphenyl-3-methyl-2-butanol Propionate 2-Naphthalenesulfonate; Levopropoxyphene Napsilate; (2S,3R)-4-(Dimethylamino)-3-methyl-1,2-diphenylbutan-2-yl propionate 2-naphthalenesulfonate; Novrad (as napsylate); SC-26100; Levopropoxyphene 2-Naphthalenesulfonate; d-Propoxyphene Napsylate Isomer
EINECS	Contact for details

Quality Control

Our Levopropoxyphene Napsylate is manufactured under strict quality management systems. Each batch is subjected to rigorous analytical testing, including identity confirmation, purity assay, and impurity profiling, to ensure it meets stringent pharmaceutical-grade standards. A comprehensive Certificate of Analysis (COA) detailing all test results 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 area at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after each use to prevent degradation from atmospheric moisture.

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)	98.0% - 102.0% (on anhydrous basis)
Water Content (KF)	≤ 1.0%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 20 ppm
Related Substances (HPLC)	Individual impurity ≤ 0.5%; Total impurities ≤ 1.5%
Optical Rotation	Specific range provided on COA

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