4,5a-Dihydronorethisterone

Name: 4,5a-Dihydronorethisterone
Brand: Vaqora Chemicals
SKU: VQ-023295

About 4,5a-Dihydronorethisterone

Vaqora Chemicals supplies 4,5a-Dihydronorethisterone, an impurity of Norethindrone registered under CAS number 52-79-9. Its molecular formula is C20H28O2 and its molecular weight is 300.4 g/mol. Alternative names: 4,5α-Dihydronorethisterone and 5alpha-Dihydronorethisterone.

It is supplied as a solid. Store the standard in its sealed vial, protected from light and moisture, and follow the storage condition printed on the COA. Handle it with standard laboratory precautions and appropriate personal protective equipment.

Pharmaceutical QC and development laboratories use this impurity standard of Norethindrone to develop and validate HPLC methods, to set specification limits and to document impurity profiles in ANDA and DMF submissions. It is used across pharmaceutical manufacturing and academic and industrial research.

Available in 10 mg, 25 mg, 50 mg and 100 mg packs, 4,5a-Dihydronorethisterone is dispatched with a Certificate of Analysis (COA) to destinations worldwide.

Typical applications

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

Industries

Related to Norethindrone

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

Norethindrone impurities

Specifications & identifiers

Chemical identifiers
Product name	4,5a-Dihydronorethisterone
Catalogue No.	VQ-023295
CAS Number	52-79-9
IUPAC name	(5S,8R,9R,10S,13S,14S,17R)-17-ethynyl-17-hydroxy-13-methyl-1,2,4,5,6,7,8,9,10,11,12,14,15,16-tetradecahydrocyclopenta[a]phenanthren-3-one
Molecular formula	C₂₀H₂₈O₂
Molecular weight	300.4 g/mol
Exact mass	300.2089
Grade	Reference Standard
HSN code	38229090
InChIKey	OMGILQMNIZWNOK-XDQPPUBWSA-N
SMILES	C[C@]12CC[C@H]3[C@H]([C@@H]1CC[C@]2(C#C)O)CC[C@@H]4[C@@H]3CCC(=O)C4
PubChem CID	63023

Physical properties
Physical form	Solid
LogP (XLogP3)	3.3
H-bond donors / acceptors	1 / 2
TPSA	37.3 Å²
Synonyms	4,5α-Dihydronorethisterone, 5alpha-Dihydronorethisterone, 5alpha-Dihydronorethindrone, 4,5alpha-Dihydronorethisterone, 19-Norpregn-20-yn-3-one, 17-hydroxy-, (5alpha,17alpha)-, STS 737, 5-alpha-Dihydronorethindrone, 5a-Dihydronorethindrone, 5-alpha-Dihydronorethisterone, 5-alpha-Dihydro-19-norethisterone, 17-Hydroxy-19-norpregn-20-yn-3-one (5-alpha,17-alpha)-

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 4,5a-Dihydronorethisterone?

The CAS Registry Number of 4,5a-Dihydronorethisterone is 52-79-9. It is also known as 4,5α-Dihydronorethisterone, 5alpha-Dihydronorethisterone, 5alpha-Dihydronorethindrone.

What is the molecular formula and molecular weight of 4,5a-Dihydronorethisterone?

4,5a-Dihydronorethisterone has the molecular formula C20H28O2 and a molecular weight of 300.4 g/mol. Its IUPAC name is (5S,8R,9R,10S,13S,14S,17R)-17-ethynyl-17-hydroxy-13-methyl-1,2,4,5,6,7,8,9,10,11,12,14,15,16-tetradecahydrocyclopenta[a]phenanthren-3-one.

What is 4,5a-Dihydronorethisterone used for?

4,5a-Dihydronorethisterone is supplied as a characterised reference material related to Norethindrone. 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 4,5a-Dihydronorethisterone can I order?

We supply 4,5a-Dihydronorethisterone 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 4,5a-Dihydronorethisterone?

Yes. Every lot of 4,5a-Dihydronorethisterone 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 4,5a-Dihydronorethisterone be shipped internationally?

Yes. We export 4,5a-Dihydronorethisterone worldwide by air and sea freight or express courier, on EXW, FOB, CIF, CFR or DAP Incoterms, with full export documentation.