Active ingredientFinasterideCat. No. P-F047-001CAS 98319-26-7
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Impurity or related compound · Finasteride family
Pharmaceutical analytical standardFinasteride Impurity 19
Synonyms: N-(1,1-Dimethylethyl)-17beta-carbamoyl-5-oxo-A-nor-3,5-secoandrostane-3-oic Acid
- Cat. No.
- P-F047-034
- CAS
- 190006-01-0
- Alternative CAS
- N/A
- Formula
- C23H37NO4
- Molecular weight
- 391.55 g/mol
- Category
- Impurity or related compound
Family: Finasteride
An inhibitor of type 2 5-alpha reductase, the enzyme that turns testosterone into dihydrotestosterone: approved in the United States in 1992 for benign prostatic hyperplasia and in 1997 for male pattern hair loss.
Did you know?It grew out of Julianne Imperato-McGinley's studies of a rare inherited deficiency of this enzyme in the Dominican Republic: in affected people the prostate stays small, a clue that inspired the medicine.
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 Finasteride family
Active ingredientFinasterideCat. No. P-F047-001CAS 98319-26-7
Pharmacopoeial impurityFinasteride EP Impurity ACat. No. P-F047-002CAS 98319-24-5
Pharmacopoeial impurityFinasteride EP Impurity BCat. No. P-F047-003CAS 103335-41-7
Pharmacopoeial impurityFinasteride EP Impurity CCat. No. P-F047-004CAS 1800205-94-0
Isotopically labelledFinasteride-d9Cat. No. P-F047-006CAS 1131342-85-2
NitrosamineN1-Nitroso FinasterideCat. No. P-F047-007
NitrosamineN2-Nitroso FinasterideCat. No. P-F047-008
ImpurityFinasteride Dihydro Carboxylic AcidCat. No. P-F047-009CAS 103335-55-3Frequently 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.