Description

Previtamin D2 is a key photochemical intermediate in the synthesis of ergocalciferol (Vitamin D2). This compound is essential for research and production processes where precise control over the vitamin D metabolic pathway is required. It is primarily utilized by the pharmaceutical, nutraceutical, and fine chemical industries for the development of vitamin supplements, active pharmaceutical ingredients (APIs), and advanced biochemical research.

Application

• Pharmaceutical Intermediate: Critical precursor in the commercial and research-scale synthesis of Vitamin D2 (Ergocalciferol).
• Nutraceutical Manufacturing: Used in the production of high-purity vitamin D2 supplements and fortification agents.
• Biochemical Research: Serves as a standard and reagent in studies of photochemistry, vitamin D metabolism, and sterol transformations.
• Fine Chemical Synthesis: A building block for the synthesis of more complex steroidal compounds and analogs.
• Reference Standard: Employed as a certified reference material (CRM) in analytical laboratories for quality control and method validation.

Basic Information

Product Name	Previtamin D2
CAS No.	21307-05-1
Molecular Formula	C28H44O
Molecular Weight	396.65 g/mol
Synonyms	Provitamin D2; (3β,5Z,7E)-9,10-Secocholesta-5,7,10(19)-trien-3-ol; Lumisterol D2; Tachysterol D2 (related isomer); Pre-ergocalciferol; 5,7,10(19)-Ergostatrien-3β-ol; 9,10-Secoergosta-5,7,10(19)-trien-3-ol
EINECS	Contact for details

Quality Control

Our Previtamin D2 is manufactured under strict quality management systems. Each batch is subjected to comprehensive analytical testing, including HPLC for purity and identity confirmation via spectroscopic methods, to ensure it meets stringent specifications for research and production use. Certificates of Analysis (COA) detailing purity, related substances, and physical characteristics are provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (15-25°C). Due to its light-sensitive nature, handling should be performed under subdued light or amber glass to prevent photochemical degradation.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 98.0%
Related Substances (HPLC)	Total impurities ≤ 2.0%
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%

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