Isotopically labelledClascoterone-D5Cat. No. P-C182-002
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Active ingredient · Clascoterone family
Pharmaceutical analytical standardClascoterone
Synonyms: Cortexolone 17alpha-propionate, Winlevi, Breezula, Cortodoxone 17alpha-propionate
- Cat. No.
- P-C182-001
- CAS
- 19608-29-8
- Alternative CAS
- N/A
- Formula
- C24H34O5
- Molecular weight
- 402.53 g/mol
- Category
- Active ingredient (API)
A topical steroidal antiandrogen, cortexolone 17-alpha-propionate, that blocks the androgen receptor directly in the skin: approved in the United States in 2020 as a cream for acne, the first of its class, and authorised in the European Union in 2025.
Did you know?It has also been studied on the scalp for androgenetic hair loss: in two phase III trials, disclosed at the end of 2025, it grew more hair than placebo.
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 Clascoterone family
Isotopically labelledClascoterone-D5Cat. No. P-C182-002
ImpurityClascoterone 1,4-diene ImpurityCat. No. P-C182-003
ImpurityClascoterone Impurity 1Cat. No. P-C182-004CAS 85198-30-7
ImpurityCortexolone-21-propionateCat. No. P-C182-005CAS 95624-09-2Frequently 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.