Active ingredientNorethisteroneCat. No. P-N090-001CAS 68-22-4
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Impurity or related compound · Norethisterone family
Pharmaceutical analytical standardNorethindrone Acetate (S) Enantiomer
Synonyms: 17-(Acetyloxy)-19-norpregn-4-en-20-yn-3-one, Aygestin, Milligynon, Miniphase, Norlutate, Progylut, Milli-Anovlar, Norlutin A, Norlutine acetate, NSC 22844, Primodos (Salt/Mix), Component of Anovlar (Salt/Mix), Component of Minovlar (Salt/Mix), Component of Estrostep (Salt/Mix), Component of Etalontin (Salt/Mix), Component of Primosiston (Salt/Mix), Testerone, 19-nor-17alpha-ethynyl-, acetate
- Cat. No.
- P-N090-027
- CAS
- 38673-38-0
- Alternative CAS
- 51-98-9 (other form)
- Formula
- C22H28O3
- Molecular weight
- 340.46 g/mol
- Category
- Impurity or related compound
Family: Norethisterone
A synthetic progestogen prepared on 15 October 1951 in Mexico City by the young chemist Luis Miramontes, under the guidance of Carl Djerassi and George Rosenkranz: its synthesis paved the way for the contraceptive pill.
Did you know?Miramontes was a student working on his undergraduate thesis: his name appears on the patent alongside those of Djerassi and Rosenkranz.
The two levels compared
| Level 1 Mass balance | Level 2 Mass balance + qNMR | |
|---|---|---|
| Identity (IR, MS, 1H and 13C-NMR; peptides: ESI-MS, MALDI-TOF and IR) | ✓ | ✓ |
| HPLC purity (min. 95%) | ✓ | ✓ |
| Content by mass balance (min. 90%; peptides: for information only)* | ✓ | ✓ |
| Content verified by qNMR (small molecules only) | · | ✓ |
| Suitable to qualify it as an in-house primary standard (ICH Q7) | · | ✓ |
* Mass balance is performed on every molecule. The only exceptions are cases where the chemistry of the molecule prevents it, for example oils and highly volatile substances, on which some of the required measurements cannot be made: in those cases the CoA states how the content was assigned.
What you receive
The analytical standard
Shipped under controlled temperature when the molecule requires it.
Certificate of analysis (CoA)
For every lot: identity, purity and assay, with the supporting spectra and chromatograms.
Safety data sheet (SDS)
Sent with every order.
Tracked shipment
Follow your shipment live, from our warehouse to your lab.
More products in the Norethisterone family
Active ingredientNorethisteroneCat. No. P-N090-001CAS 68-22-4
Active ingredientNorethisterone AcetateCat. No. P-N090-002CAS 51-98-9
Active ingredientNorethisterone ValerateCat. No. P-N090-003CAS 112756-00-0
Pharmacopoeial impurity17-epi-NorethindroneCat. No. P-N090-004CAS 38673-36-8
Pharmacopoeial impurityNorethindrone Acetate EP Impurity BCat. No. P-N090-005CAS 19637-28-6
Pharmacopoeial impurityNorethindrone Acetate EP Impurity CCat. No. P-N090-006CAS 1175129-26-6
Pharmacopoeial impurityNorethindrone Acetate EP Impurity DCat. No. P-N090-007
Pharmacopoeial impurityNorethindrone Acetate EP Impurity ECat. No. P-N090-008CAS 66964-58-7Frequently asked questions
Is mass balance always performed?
Yes, on every molecule. The only exceptions are cases where the chemistry of the molecule prevents it: for example oils and highly volatile substances, on which some measurements (such as thermogravimetry) cannot be made. In those cases the CoA states which method was used to assign the content.
Can I ask for a different quantity?
Yes. The quantities are only suggestions: choose "Other" and enter the milligrams or grams you need.
Which level should I choose?
Level 1 is enough for most routine testing. Level 2 adds an independent qNMR content value and is meant for labs that need to qualify an in-house primary standard. For peptides and similar molecules, Level 2 is not available.
When will I get the quote?
Within 24 working hours, with price, availability and delivery time.
Need a molecule you cannot find?
Custom synthesis of impurities, metabolites and labelled compounds, with the same characterisation level.