Active ingredientPhenylalanineCat. No. P-P090-001CAS 63-91-2
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Impurity or related compound · Phenylalanine family
Pharmaceutical analytical standardFmoc-L-4-(Tetrazol-5-yl)-Phenylalanine
- Cat. No.
- P-P090-026
- CAS
- 299944-65-3
- Alternative CAS
- N/A
- Formula
- C25H21N5O4
- Molecular weight
- 455.47 g/mol
- Category
- Impurity or related compound
Family: Phenylalanine
An essential aromatic amino acid, first described in 1879 in yellow lupin seedlings: the body turns it into tyrosine and from there into dopamine, noradrenaline and melanin.
Did you know?Phenylketonuria, the inherited inability to break it down, was discovered in 1934 by Norwegian physician Asbjørn Følling: the urine of two young siblings turned green, instead of purple, with ferric chloride.
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 Phenylalanine family
Active ingredientPhenylalanineCat. No. P-P090-001CAS 63-91-2
Isotopically labelledD-Phenylalanine-d5Cat. No. P-P090-002CAS 362049-55-6
Isotopically labelledD-Phenylalanine-d8Cat. No. P-P090-003CAS 1202064-02-5
Isotopically labelledD-Phenylalaninyl-D-Phenylalanine-d5Cat. No. P-P090-004
Isotopically labelledL-Phenylalanine-d8Cat. No. P-P090-006CAS 17942-32-4
Isotopically labelledN-Lactoyl-L-Phenylalanine-d3Cat. No. P-P090-007
Isotopically labelledN-Lactoyl-L-Phenylalanine-d5Cat. No. P-P090-008
ImpurityPhenylalanine Impurity 1Cat. No. P-P090-009CAS 853687-23-7Frequently 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.