Description

L-Tetrandrine is a bisbenzylisoquinoline alkaloid derived from the roots of *Stephania tetrandra* and other related plants. This compound is valued for its significant pharmacological activity and serves as a key reference standard and active pharmaceutical ingredient (API) intermediate. It is primarily sought by research institutions and manufacturers in the pharmaceutical, biotechnology, and nutraceutical sectors for drug discovery, quality control, and the development of therapeutic agents.

Application

• Pharmaceutical Research & Development: As a reference standard for analytical methods (HPLC, LC-MS) in drug discovery and quality assurance.
• Active Pharmaceutical Ingredient (API) Synthesis: Serves as a critical intermediate or starting material for the production of therapeutic compounds.
• Biological Studies: Used in preclinical research to investigate its anti-inflammatory, anti-hypertensive, and anti-cancer properties.
• Traditional Medicine Standardization: Employed to standardize and authenticate herbal extracts containing tetrandrine alkaloids.
• Biochemical Reagent: Utilized as a calcium channel blocker in physiological and pharmacological experiments.

Basic Information

Product Name	L-Tetrandrine
CAS No.	1263-79-2
Molecular Formula	C38H42N2O6
Molecular Weight	622.75 g/mol
Synonyms	(-)-Tetrandrine; Tetrandrine; Fanchinin; Hanfangchin A; NSC-77037; (1S)-6,6',7,12-Tetramethoxy-2,2'-dimethylberbaman; (S)-Tetrandrine
EINECS	215-022-6

Quality Control

Our L-Tetrandrine is produced and tested under strict quality management systems. Each batch undergoes comprehensive analysis to ensure identity, purity, and consistency, meeting the stringent requirements for research and pharmaceutical applications. A Certificate of Analysis (COA) detailing specifications such as assay (HPLC), related substances, and residual solvents is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at controlled room temperature (15-25°C). The product is light-sensitive and should be handled under appropriate conditions to maintain stability.

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%
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 20 ppm
Related Substances (HPLC)	Individual impurity ≤ 0.5%; Total impurities ≤ 1.5%

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