4,5a-Dihydronorethisterone

Name: 4,5a-Dihydronorethisterone
Brand: Zemixal
SKU: ZX-022317

Reference StandardAvailable on request

4,5a-Dihydronorethisterone (CAS 52-79-9) supplier Zemixal. Request a quote with price, lead time and documents. Quotes within one business day.

Pack sizes

4,5a-Dihydronorethisterone chemical structure

CAS number52-79-9

FormulaC₂₀H₂₈O₂

Molar mass300.4 g/mol

Physical formSolid

HS code38229090

InChIKeyOMGILQMNIZWNOK-XDQPPUBWSA-N

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

About 4,5a-Dihydronorethisterone

Zemixal lists 4,5a-Dihydronorethisterone for laboratories that identify, quantify or control Norethindrone and its related substances. Key data (Reference Standard): CAS 52-79-9, formula C20H28O2 and molar mass 300.4 g/mol. It is handled as a solid.

Common uses in the lab and plant

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

Order it in 10 mg, 25 mg, 50 mg and 100 mg packs or ask for a bulk quotation. Each lot travels with a certificate of analysis with characterisation data. Add it to your quote list and our team replies with price, lead time and shipping options within one business day.

Reference standards for Norethindrone

See every impurity, metabolite and related compound we list for this API.

Norethindrone standards

Typical uses

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

Applications

Pharmaceutical Manufacturing and QC Research Labs and Universities

Specifications and identifiers

Specifications of 4,5a-Dihydronorethisterone
Product name	4,5a-Dihydronorethisterone
Catalogue number	ZX-022317
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
Molar mass	300.4 g/mol
Exact mass	300.2089
Grade	Reference Standard
Physical form	Solid
XLogP3	3.3
H-bond donors / acceptors	1 / 2
Topological polar surface area	37.3 Å²
HS 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
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)-

Lot values are stated on the batch certificate of analysis. Ask for a typical COA with your quotation.

Safety and GHS hazards

No GHS classification is on file for this item. Handle it as an unknown laboratory chemical and request the SDS with your quotation.

Pack sizes

Pack sizes of 4,5a-Dihydronorethisterone
10 mg	Quoted on request
25 mg	Quoted on request
50 mg	Quoted on request
100 mg	Quoted on request

Need a different size? Bulk drums and custom packing are quoted on request through the quote form on this page.

Questions about 4,5a-Dihydronorethisterone

Which CAS number identifies 4,5a-Dihydronorethisterone?

4,5a-Dihydronorethisterone is registered under CAS 52-79-9. You may also see it listed as 4,5α-Dihydronorethisterone, 5alpha-Dihydronorethisterone, 5alpha-Dihydronorethindrone. Our catalogue number for this item is ZX-022317.

What are the formula and molar mass of 4,5a-Dihydronorethisterone?

For 4,5a-Dihydronorethisterone, its formula is C20H28O2 and its molar mass is 300.4 g/mol. The systematic (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. InChIKey OMGILQMNIZWNOK-XDQPPUBWSA-N lets you match it in any structure database.

How is 4,5a-Dihydronorethisterone used in pharmaceutical QC?

4,5a-Dihydronorethisterone is a characterised reference material linked to Norethindrone. Laboratories use it to identify and quantify this impurity during method development and validation, stability work, batch release testing and regulatory submissions.

What grade and pack sizes are available for 4,5a-Dihydronorethisterone?

This listing is Reference Standard grade. Standard packs are 10 mg, 25 mg, 50 mg, 100 mg. Larger quantities and custom packing can be quoted on request.

Which documents come with 4,5a-Dihydronorethisterone?

Each lot ships with a batch certificate of analysis and a 16-section GHS safety data sheet. A typical COA or specification sheet can be shared with the quotation before you order.

Can Zemixal ship 4,5a-Dihydronorethisterone to my country?

Yes. 4,5a-Dihydronorethisterone ships worldwide by express courier, air cargo or sea freight, quoted on the Incoterm you prefer, with full export documents.

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