ImpurityAndrostenedione Impurity 1Cat. No. P-A159-002
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Impurity or related compound · Androstenedione family
Pharmaceutical analytical standardAndrostenedione Impurity 4
- Cat. No.
- P-A159-005
- CAS
- 72659-99-5
- Alternative CAS
- N/A
- Formula
- C21H28O2
- Molecular weight
- 312.45 g/mol
- Category
- Impurity or related compound
Family: Androstenedione
A natural steroid hormone with weak androgenic activity, produced by the adrenal glands and the gonads: it is the common precursor of testosterone and oestrone, that is, of both male and female sex hormones.
Did you know?In the ovary two cell types work as a team: theca cells make androstenedione and pass it to granulosa cells, which use the enzyme aromatase to turn it into oestrogens.
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 Androstenedione family
ImpurityAndrostenedione Impurity 1Cat. No. P-A159-002
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ImpurityAndrostenedione Impurity 6Cat. No. P-A159-007CAS 59580-81-3
ImpurityAndrostenedione Impurity 7Cat. No. P-A159-008CAS 69613-81-6
ImpurityAndrostenedione Impurity 8Cat. No. P-A159-009
ImpurityAndrostenedione Impurity 9Cat. No. P-A159-010Frequently 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.