Active ingredientCycloserineCat. No. P-C272-001CAS 68-41-7
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Impurity or related compound · Cycloserine family
Pharmaceutical analytical standard2,5-Dimethylene-3,6-diketopiperazine
Synonyms: 3,6-dimethylidenepiperazine-2,5-dione, NSC 278175, Cycloserine Impurity N1
- Cat. No.
- P-C272-003
- CAS
- 15996-22-2
- Alternative CAS
- N/A
- Formula
- C6H6N2O2
- Molecular weight
- 138.13 g/mol
- Category
- Impurity or related compound
Family: Cycloserine
An antibiotic produced by bacteria of the genus Streptomyces, discovered in 1954: today it is a second-line medicine for multidrug-resistant tuberculosis.
Did you know?Its molecule is a cyclic analogue of the amino acid D-alanine: in this way it tricks bacteria and blocks two enzymes they need to build their cell wall.
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 Cycloserine family
Active ingredientCycloserineCat. No. P-C272-001CAS 68-41-7
Isotopically labelledrac-Cycloserine-15N-d3Cat. No. P-C272-002CAS 1219176-26-7
ImpurityCycloserine Impurity 1Cat. No. P-C272-004CAS 50975-79-6
ImpurityCycloserine Impurity 2Cat. No. P-C272-005CAS 5625-41-2
Impurity3-Chloro-D-alanine Methyl Ester HydrochlorideCat. No. P-C272-006CAS 112346-82-4
ImpurityCycloserine Diketopiperazine (Mixture of Isomers)Cat. No. P-C272-007CAS 1204-99-5
ImpurityCycloserine Dimer ImpurityCat. No. P-C272-008CAS 16337-02-3
ImpurityCycloserine Impurity 3Cat. No. P-C272-009Frequently 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.