Active ingredientVirginiamycinCat. No. P-V052-001CAS 11006-76-1
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Active ingredient · Virginiamycin family
Pharmaceutical analytical standardVirginiamycin S1
Synonyms: Staphylomycin S, Staphylomycin S1, Virginiamycin factor S, Virginiamycin factor S1, NSC 177858, Antibiotic 1754z3b, N-((3-Hydroxy-2-pyridinyl)carbonyl)-L-threonyl-D-alpha-aminobutyryl-L-prolyl-N-methyl-L-phenylalanyl-4-oxo-L-pipecoloyl-L-2-phenylglycine rho-lactone, N-(3-Hydroxypicolinoyl)-L-threonyl-D-alpha-aminobutyryl-L-prolyl-N-methyl-L-phenylalanyl-4-oxo-L-pipecoloyl-L-2-phenylglycine rho-lactone, Dihydrovirginiamycin S1, Virginiamycin S1 100 microg/mL in Acetonitrile
- Cat. No.
- P-V052-004
- CAS
- 23152-29-6
- Alternative CAS
- 11006-76-1 (other salt)
- Formula
- C43H49N7O10
- Molecular weight
- 823.90 g/mol
- Category
- Active ingredient (API)
Family: Virginiamycin
An antibiotic of the streptogramin family produced by the soil bacterium Streptomyces virginiae, described in 1955: it combines two components, M1 and S1, which on their own stop bacterial growth and together kill bacteria. It is used in animal farming.
Did you know?Besides livestock farming, it is used in bioethanol plants to stop bacteria from contaminating the fermentation; as an additive it even has an E number, E711.
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 Virginiamycin family
Active ingredientVirginiamycinCat. No. P-V052-001CAS 11006-76-1
Isotopically labelledVirginiamycin M1-d4Cat. No. P-V052-002Frequently 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.