Isotopically labelledDL-Tyrosine-d7Cat. No. P-T238-002CAS 402835-78-3
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Active ingredient · L-Tyrosine family
Pharmaceutical analytical standardL-Tyrosine
Synonyms: Tirosina, L-Phenylalanine, 4-hydroxy-, beta-(p-Hydroxyphenyl)alanine, FEMA No. 3736, L-Tyr, NSC 82624, NSC 9973, H-Tyr-OH, alpha-Amino-beta-(4-hydroxyphenyl)propionic acid, Propanoic acid, 2-amino-3-(4-hydroxyphenyl)-, (S)-, alpha-Amino-p-hydroxyhydrocinnamic acid, (-)-, alpha-Amino-4-hydroxybenzenepropanoic acid, (S)-, Benzenepropanoic acid, alpha-amino-4-hydroxy-, (S)-, H-Tyr, Propanoic acid, 2-amino-3-(p-hydroxyphenyl)-, Tyrosine, N-Acetyltyrosine EP Impurity A
- Cat. No.
- P-T238-001
- CAS
- 60-18-4
- Alternative CAS
- 16870-43-2 (hydrochloride)
- 69847-45-6 (sodium salt)
- 185030-86-8 (potassium salt)
- 16655-52-0 (sodium salt)
- 122666-87-9 (sodium salt hydrate)
- 46232-74-0 (potassium salt)
- 25619-78-7 (racemate)
- 55520-40-6 (alternative CAS, same compound)
- 1189756-47-5 (alternative CAS, same compound)
- Formula
- C9H11NO3
- Molecular weight
- 181.19 g/mol
- Category
- Active ingredient (API)
An aromatic amino acid found in proteins, isolated in 1846 by the German chemist Justus von Liebig from casein: our body uses it to make dopamine, adrenaline, thyroid hormones and melanin.
Did you know?Its name comes from the Greek tyros, cheese: the crunchy little crystals in well-aged cheeses such as Parmesan are often tyrosine.
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.
Pharmacopoeial standards available
The official European Pharmacopoeia standards for this molecule, supplied with EDQM documentation.
- Tyrosine CRSEP T2900000
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Impurity(R)-3-MethoxytyrosineCat. No. P-T238-005CAS 15402-76-3
Impurity3,5-Dihydroxy-L-TyrosineCat. No. P-T238-006CAS 18674-59-4
Impurity3,5-Diiodo-L-tyrosineCat. No. P-T238-007CAS 300-39-0
Impurity3,5-Dimethoxy-L-tyrosineCat. No. P-T238-008CAS 599178-75-3
Impurity3,5-Dimethyl-L-tyrosineCat. No. P-T238-009CAS 1088236-42-3Frequently 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.