Previtamin D3

Name: Previtamin D3
Brand: Vaqora Chemicals
SKU: VQ-024948

About Previtamin D3

Listed under CAS 1173-13-3, Previtamin D3 is an impurity of Cholecalciferol available from Vaqora Chemicals. Its molecular formula is C27H44O and its molecular weight is 384.6 g/mol. Common synonyms include Precalciferol and Precholecalciferol.

The product is provided as a solid. Keep the vial tightly closed, protected from light and humidity, at the temperature stated on the Certificate of Analysis. It carries the GHS signal word “Danger” with 5 hazard statements. Review the Safety Data Sheet before use.

As a characterised impurity of Cholecalciferol, it is used for analytical method development, method validation (AMV) and routine quality-control testing, and it supports ANDA and DMF regulatory filings. Buyers come mainly from pharmaceutical manufacturing and academic and industrial research.

Vaqora Chemicals supplies Previtamin D3 in 10 mg, 25 mg, 50 mg and 100 mg packs, each shipped with a Certificate of Analysis (COA), and exports worldwide.

Typical applications

Analytical method development
Method validation (AMV)
QC release testing
ANDA / DMF filings

Industries

Related to Cholecalciferol

View every impurity, metabolite and intermediate we list for Cholecalciferol.

Cholecalciferol impurities

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	Previtamin D3
Catalogue No.	VQ-024948
CAS Number	1173-13-3
IUPAC name	(1S)-3-[(Z)-2-[(1R,3aR,7aR)-7a-methyl-1-[(2R)-6-methylheptan-2-yl]-1,2,3,3a,6,7-hexahydroinden-4-yl]ethenyl]-4-methylcyclohex-3-en-1-ol
Molecular formula	C₂₇H₄₄O
Molecular weight	384.6 g/mol
Exact mass	384.3392
Grade	Reference Standard
HSN code	38229090
InChIKey	YUGCAAVRZWBXEQ-WHTXLNIXSA-N
SMILES	CC1=C(C[C@H](CC1)O)/C=C\C2=CCC[C@]3([C@H]2CC[C@@H]3[C@H](C)CCCC(C)C)C
PubChem CID	5281058

Physical properties
Physical form	Solid
LogP (XLogP3)	7.7
H-bond donors / acceptors	1 / 1
TPSA	20.2 Å²
Synonyms	Precalciferol, Precholecalciferol, Previtamin D, (6Z)-tacalciol, (6Z)-(3S)-9,10-seco-5(10),6,8-cholestatrien-3-ol, (3S,6Z)-9,10-secocholesta-5(10),6,8-trien-3-ol, tachysterol(3), 1,25-dihydroxy-3-epi-19-nor-previtamin D3, Precalciferol3, (3beta,6Z)-9,10-Secocholesta-5(10),6,8-trien-3-ol

Safety & hazard information (GHS)

Toxic

Health hazard

Signal word: Danger

Hazard statements

H300+H310+H330Fatal if swallowed, in contact with skin or if inhaled
H300Fatal if swallowed
H310Fatal in contact with skin
H330Fatal if inhaled
H373May causes damage to organs through prolonged or repeated exposure

Precautionary statements: P260, P262, P264, P270, P271, P280, P284, P301 + P316, P302 + P352, P304 + P340, P316, P319, P320, P321, P330, P361 + P364, P403 + P233, P405, P501

Classification is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Frequently asked questions

What is the CAS number of Previtamin D3?

The CAS Registry Number of Previtamin D3 is 1173-13-3. It is also known as Precalciferol, Precholecalciferol, Previtamin D.

What is the molecular formula and molecular weight of Previtamin D3?

Previtamin D3 has the molecular formula C27H44O and a molecular weight of 384.6 g/mol. Its IUPAC name is (1S)-3-[(Z)-2-[(1R,3aR,7aR)-7a-methyl-1-[(2R)-6-methylheptan-2-yl]-1,2,3,3a,6,7-hexahydroinden-4-yl]ethenyl]-4-methylcyclohex-3-en-1-ol.

What is Previtamin D3 used for?

Previtamin D3 is supplied as a characterised reference material related to Cholecalciferol. It is used for analytical method development and validation (AMV), impurity profiling, stability studies and quality control, and in ANDA/DMF regulatory filings.

Which grade and pack sizes of Previtamin D3 can I order?

We supply Previtamin D3 in Reference Standard grade, in 10 mg, 25 mg, 50 mg, 100 mg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Previtamin D3?

Yes. Every lot of Previtamin D3 is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can Previtamin D3 be shipped internationally?

Yes. Previtamin D3 is classified as hazardous, so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.