Active ingredientCetrorelixCat. No. P-C121-001CAS 120287-85-6
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Impurity or related compound · Cetrorelix family
Pharmaceutical analytical standardCetrorelix Impurity 9 Trifluoroacetate
Synonyms: (2S)-1-[(2S)-2-[[(2S)-2-[[(2R)-2-[[(2S)-2-[[(2S)-2-[[(2R)-2-[[(2R)-2-[[(2R)-2-Acetamido-3-naphthalen-2-ylpropanoyl]amino]-3-(4-chlorophenyl)propanoyl]amino]-3-pyridin-3-ylpropanoyl]amino]-3-hydroxypropanoyl]amino]-3-(4-hydroxyphenyl)propanoyl]amino]-5-aminopentanoyl]amino]-4-methylpentanoyl]amino]-5-(diaminomethylideneamino)pentanoyl]-N-[(2R)-1-amino-1-oxopropan-2-yl]pyrrolidine-2-carboxamide trifluoroacetate
- Cat. No.
- P-C121-022
- CAS
- N/A
- Alternative CAS
- N/A
- Formula
- C69H91ClN16O13·C2HF3O2
- Molecular weight
- 1502.06 g/mol
- Category
- Impurity or related compound
Family: Cetrorelix
A synthetic decapeptide that blocks the GnRH receptor in the pituitary gland, holding back the hormones that lead to ovulation. Approved in Europe in 1999, it is used in assisted reproduction to prevent premature ovulation.
Did you know?Many of its ten amino acids are in the D form, the mirror image of those in our proteins, and some, such as naphthylalanine, are not found in natural proteins at all.
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 Cetrorelix family
Active ingredientCetrorelixCat. No. P-C121-001CAS 120287-85-6
Active ingredientCetrorelix AcetateCat. No. P-C121-003CAS 145672-81-7
ImpurityCetrorelix Impurity 1Cat. No. P-C121-007
ImpurityCetrorelix Impurity 2Cat. No. P-C121-008CAS 3026917-81-4
ImpurityCetrorelix Impurity 3Cat. No. P-C121-011
ImpurityCetrorelix Impurity 4Cat. No. P-C121-012
ImpurityCetrorelix Impurity 5Cat. No. P-C121-014
ImpurityCetrorelix Impurity 6 TrifluoroacetateCat. No. P-C121-017Frequently 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.