Molekula
Norethisterone (Norethindrone)
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Norethisterone (Norethindrone) is a synthetic steroid hormone used primarily in hormonal contraceptives and hormone replacement therapy. It functions as a progestin and is also used in the treatment of menstrual disorders and endometriosis. Available in powder form, it has a CAS number of 68-22-4, a molecular formula of C20H26O2, and a molecular weight of 298.42 g/mol. It should be stored at ambient temperature. Molekula supplies Norethisterone from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
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1 g — £89.70 per pack ex VAT · £107.64 inc. VAT
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | white or almost white crystalline powder |
| Assay/Purity | 97% - 102% |
| Melting Point | 202°C to 208°C |
| Grade | USP31 |
| Identification | TLC,UV&IR |
| Loss on Drying | ≤ 0.5% |
| Related Substances | ≤ 2% |
| Specific optical rotation | -30° to -38° |
| Limit of ethynyl group | 8.18 % - 8.43 % |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Transport Class | 9 |
| Packing Group | III |
| Acidity | Acid |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | White crystalline powder |
| Odour | Odorless |
| Melting Point | 204 °C |
| Water Solubility | 7.04 mg/L water at 25 °C |
| Solubility (other solvents) | Sparingly soluble in alcohol; soluble in chloroform and dioxane; slightly soluble in ether |
| Vapour Pressure | 3.14 × 10⁻⁷ mmHg |
| log P (octanol/water) | 2.97 |
Source: PubChem CID 6230 (HSDB, Occupational Safety and Health Administration (OSHA))
Identification
| Property | Value |
|---|---|
| SKU | 56768777 |
| CAS Number | 68-22-4 |
| 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 |
| EC Number | 200-681-6 |
| Molecular Formula | C20H26O2 |
| Molecular Weight | 298.42 |
| Exact Mass | 298.1933 |
| SMILES | C[C@]12CC[C@H]3[C@H]([C@@H]1CC[C@]2(C#C)O)CCC4=CC(=O)CC[C@H]34 |
| InChIKey | VIKNJXKGJWUCNN-XGXHKTLJSA-N |
| InChI | InChI=1S/C20H26O2/c1-3-20(22)11-9-18-17-6-4-13-12-14(21)5-7-15(13)16(17)8-10-19(18,20)2/h1,12,15-18,22H,4-11H2,2H3/t15-,16+,17+,18-,19-,20-/m0/s1 |
| PubChem CID | 6230 |
| UN Number | UN3077 |
| REACH Code | Y110 |
| HTS Code | 2937235050 |
| Tariff Code | 2937230000 |
Safety & GHS
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Serious Health Hazard
GHS08
Hazard statements
- H351 Suspected of causing cancer
- H360FD May damage fertility. May damage the unborn child.
- H362 May cause harm to breast-fed children
- H400 Very toxic to aquatic life
- H410 Very toxic to aquatic life with long lasting effects
Precautionary statements
- P201 Obtain special instructions before use
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- P264 Wash thoroughly after handling
- P273 Avoid release to the environment
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P304+341 IF INHALED: If breathing is difficult, remove victim to fresh air and keep at rest in a position comfortable for breathing
- P308+313 IF exposed or concerned: Get medical advice/attention
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- 19-Norethisterone
- Anovule
- Gestest
- Micronor
- Micronovum
- Norcolut
- norethindrone
- Norethisteron
- Norethisterone
- Norlutin
Frequently asked questions
What is Norethisterone used for?
Norethisterone is a synthetic steroid used primarily in hormonal contraceptives and hormone replacement therapy.
What is the chemical formula and molecular weight of Norethisterone?
The chemical formula is C20H26O2 with a molecular weight of 298.42 g/mol.
How should Norethisterone be stored?
Store at ambient temperature, away from moisture and light, as specified on the safety data sheet.
What grade of Norethisterone does Molekula supply?
Molekula supplies Norethisterone in research-grade purity suitable for laboratory use.
Can Molekula supply Norethisterone in bulk quantities?
Yes, Molekula can supply Norethisterone in bulk quantities—please contact our sales team for pricing and availability.
What documentation comes with a Norethisterone order?
Each order includes a Certificate of Analysis and Safety Data Sheet (SDS) with the shipment.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.