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Norethisterone

Norethisterone

CAS Number: 68-22-4

Molecular Formula: C20H26O2

About Norethisterone

Norethisterone (CAS 68-22-4) serves as a critical 19-norprogesterone derivative in the United States pharmaceutical sector, specialized for use in high-purity fine chemicals production for oral contraceptives and hormone replacement therapies. 17-alpha-Ethynyl-19-nortestosterone represents a cornerstone of the domestic...

Norethisterone Specifications

CAS Number
68-22-4
Molecular Formula
C20H26O2
Molecular Weight
298.42 g/mol
IUPAC Name
(8R,9S,10R,13S,14S,17R)-17-ethynyl-17-hydroxy-13-methyl-1,2,6,7,8,9,10,11,12,14,15,16-dodecahydrocyclopenta[a]phenanthren-3-one
Canonical SMILES
C[C@]12CC[C@H]3[C@H]([C@@H]1CC[C@@]2(C#C)O)CCC4=CC(=O)CC[C@H]34
InChI Key
VIKNJXKGJWUCNN-XGXHKTLJSA-N
PubChem CID
6230
Molecular Weight
298.42 g/mol
Physical appearance
White to light yellow powder to crystal

Hormone Therapy Agent

A synthetic progestogen used to treat heavy, painful, or irregular periods, premenstrual syndrome (PMS), and endometriosis by mimicking the activity of natural progesterone

Contraceptive Agent

An oral progestin-only pill used to prevent pregnancy by thickening cervical mucus and thinning the uterine lining

Oncology Treatment

A high-dose hormonal therapeutic used in the management of hormone-dependent female cancers, such as breast cancer

Period Delay Medication

A short-term hormonal treatment used to postpone menstruation by maintaining high progesterone levels to prevent the shedding of the womb lining

IVF Cycle Regulator

A pharmaceutical used in assisted reproduction to control the timing of the menstrual cycle ahead of egg collection or embryo transfer.

Norethisterone FAQs

Minimum Order Quantity

25 kg (evaluation) · 1 MT (commercial)

Lead Time

3 – 5 weeks estimated

Delivery Terms

FOB*

Packaging

20 L pails, 200 L HDPE drums, 1000 L IBC

US Availability

US Facility Inventory

Documentation

US SDS · COA · TDS · Specification sheet

US Regulatory & Quality Information

TSCA status*

US SDS / HazCom*

GHS classification*

ISO 9001:2015 site*

DOT shipping classification*

FDA status*

EPA status*

California Prop 65*

Reliable US supply chain

Regulatory compliance

On-time delivery

Technical expert support

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