Description

Stigmasterol Acetate is a high-purity derivative of the plant sterol stigmasterol, widely utilized as a critical pharmaceutical intermediate and a key reference standard. Its primary value lies in providing a reliable and consistent starting material for the synthesis of steroid hormones and other bioactive compounds. This product is essential for manufacturers and research institutions in the pharmaceutical, nutraceutical, and fine chemical sectors, where precise chemical structure and purity are paramount for downstream process success.

Application

• Pharmaceutical Intermediate: A crucial starting material for the semi-synthesis of various steroid-based active pharmaceutical ingredients (APIs).
• Reference Standard: Used in analytical laboratories for method development, validation, and quality control testing via HPLC, GC, or TLC.
• Biochemical Research: Employed in studies investigating cholesterol metabolism, membrane biology, and plant sterol pathways.
• Nutraceutical Precursor: Serves as a precursor in the development of high-value dietary supplements and functional food ingredients.
• Fine Chemical Synthesis: Acts as a building block for synthesizing specialized chemicals used in agrochemicals and advanced materials.

Basic Information

Product Name	Stigmasterol Acetate
CAS No.	4651-48-3
Molecular Formula	C₃₁H₅₀O₂
Molecular Weight	458.73 g/mol
Synonyms	Stigmasterol acetate; Stigmast-5,22-dien-3β-ol acetate; (3β)-Stigmasta-5,22-dien-3-yl acetate; 22,23-Dihydrostigmasterol acetate; α-Spinasterol acetate (related isomer); 24-Ethylcholesta-5,22-dien-3β-ol acetate; Stigmasterol 3-acetate; NSC 122045
EINECS	225-077-5

Quality Control

Our Stigmasterol Acetate is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure it meets the highest standards of identity, purity, and strength. Certificates of Analysis (COA) detailing specific results for assay, related substances, and other critical parameters are provided with every shipment. We can supply material compliant with various pharmacopeial monographs (e.g., USP, EP) upon request.

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). This material is hygroscopic (moisture-sensitive); ensure the container is kept tightly sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥98.0%
Melting Point	136°C - 142°C
Specific Rotation	-40° to -48° (c=1 in CHCl₃)
Loss on Drying	≤0.5%
Related Substances (HPLC)	Total impurities ≤2.0%

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