Active ingredient · Calicheamicin family
Pharmaceutical analytical standardCalicheamicin
Synonyms: Calicheamicin gamma1I
- Cat. No.
- P-C011-001
- CAS
- 108212-75-5
- Alternative CAS
- N/A
- Formula
- C55H74IN3O21S4
- Molecular weight
- 1368.34 g/mol
- Category
- Active ingredient (API)
An antitumour antibiotic of the enediyne family, produced by the bacterium Micromonospora echinospora: it slots into the minor groove of DNA and cuts it. Isolated in the mid-1980s, in 2000 it became the payload of an antibody-drug conjugate for acute myeloid leukaemia.
Did you know?Its name recalls where it was found: the 'caliche pits', the chalky soils of Kerrville, Texas, where the soil sample containing the producing bacterium was collected.
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
Shipped under controlled temperature when the molecule requires it.
For every lot: identity, purity and assay, with the supporting spectra and chromatograms.
Sent with every order.
Follow your shipment live, from our warehouse to your lab.
Frequently 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.