Description

(25R)-5α-Spirostane-3β,15β-Diol 3-(4-Methylbenzenesulfonate) CAS NO 54965-90-1 is a high-purity, steroidal derivative characterized by its specific spirostane backbone and functionalized with a tosylate group. This compound serves as a critical advanced pharmaceutical intermediate and a versatile building block in organic synthesis, enabling the development of novel bioactive molecules. It is primarily utilized by research institutions and manufacturers in the pharmaceutical, biotechnology, and fine chemical sectors for the synthesis of steroid-based drugs and other specialized chemical entities.

Application

• Pharmaceutical Intermediate: Key starting material or intermediate in the synthesis of novel steroid-based therapeutics and active pharmaceutical ingredients (APIs).
• Biochemical Research: Used as a reference standard or probe in metabolic pathway studies and steroid hormone research.
• Organic Synthesis: Acts as a versatile chiral building block for constructing complex molecular architectures in medicinal chemistry.
• Process Development: Employed in the research and development (R&D) of scalable synthetic routes for new chemical entities.
• Academic Research: Utilized in university and institutional labs for studying steroid chemistry and reaction mechanisms.

Basic Information

Product Name	(25R)-5α-Spirostane-3β,15β-Diol 3-(4-Methylbenzenesulfonate)
CAS No.	54965-90-1
Molecular Formula	C34H50O6S
Molecular Weight	586.83 g/mol
Synonyms	(25R)-Spirostane-3β,15β-diol 3-tosylate; 3β,15β-Dihydroxy-5α-spirostan-3-yl 4-methylbenzenesulfonate; 5α-Spirostane-3β,15β-diol 3-(p-toluenesulfonate); (3β,15β,25R)-Spirostane-3,15-diol 3-(4-methylbenzenesulfonate); 54965-90-1; Steroid tosylate intermediate; Spirostan-3β,15β-diol 3-tosylate
EINECS	Contact for details

Quality Control

Our (25R)-5α-Spirostane-3β,15β-Diol 3-(4-Methylbenzenesulfonate) is produced under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC, NMR, and MS, to ensure high chemical purity and structural identity. Certificates of Analysis (COA) detailing purity, impurities, and physical characteristics are provided with every shipment to guarantee batch-to-batch consistency and support your R&D and production needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (typically 15-25°C). This compound is light-sensitive (store away from light) and may be hygroscopic (moisture-sensitive). For long-term storage, consider desiccation and an inert atmosphere to maintain stability.

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%
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Single Unknown Impurity (HPLC)	≤ 0.5%
Total Impurities (HPLC)	≤ 2.0%

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