Description

(24R,25R,28R)-3β,28-Dihydroxy-6,22-Dioxo-5α-Stigmastan-26-Oic Acid γ-Lactone is a high-purity, steroidal lactone compound of significant interest in advanced pharmaceutical research and synthesis. This specialized intermediate is valued for its defined stereochemistry and structural complexity, which are critical for the development of novel bioactive molecules. It is primarily sought by research institutions and pharmaceutical companies engaged in the development of steroid-based therapeutics and fine chemical synthesis.

Application

• Pharmaceutical Intermediate: A key chiral building block in the multi-step synthesis of complex steroid-based active pharmaceutical ingredients (APIs).
• Biochemical Research: Used as a reference standard or probe in studies investigating steroid biosynthesis pathways and enzyme mechanisms.
• Fine Chemical Synthesis: Serves as a precursor for the preparation of more elaborate steroidal structures with potential biological activity.
• Academic Research: Employed in university and institutional labs for methodological development in organic and medicinal chemistry.

Basic Information

Product Name	(24R,25R,28R)-3β,28-Dihydroxy-6,22-Dioxo-5α-Stigmastan-26-Oic Acid γ-Lactone
CAS No.	56439-88-4
Molecular Formula	C29H42O6
Molecular Weight	486.64 g/mol
Synonyms	3β,28-Dihydroxy-6,22-dioxo-5α-stigmastan-26-oic acid γ-lactone; (24R,25R,28R)-Stigmastane lactone derivative; 5α-Stigmastane-3β,28-diol-6,22-dione 26,28-lactone; NSC 339524; Stigmastane lactone, 3β,28-dihydroxy-6,22-dioxo-5α-; (24R,25R,28R)-3β,28-Dihydroxy-6,22-dioxo-5α-stigmastan-26-oic acid γ-lactone; 26,28-Lactone of 3β,28-dihydroxy-6,22-dioxo-5α-stigmastan-26-oic acid
EINECS	Contact for details

Quality Control

Our (24R,25R,28R)-3β,28-Dihydroxy-6,22-Dioxo-5α-Stigmastan-26-Oic Acid γ-Lactone is produced under a strict quality management system. Each batch undergoes comprehensive analytical testing, including HPLC for purity and chiral analysis to confirm stereochemical integrity, ensuring it meets the exacting standards required for research and development. Certificates of Analysis (COA) with full characterization data are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (15-25°C). Keep the container sealed to protect from moisture.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Retention time matches reference standard
Purity (HPLC)	≥ 98.0%
Chiral Purity	≥ 99.0% (by Chiral HPLC)
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 10 ppm

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