5-Hydroxy L-Tryptophan-d4 (Major) CAS 1246818-91-6
| CAS No. | 1246818-91-6 |
| Molecular Formula | - |
| Molecular Weight | 224.25 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5-Hydroxy L-Tryptophan-d4 (Major) (CAS 1246818-91-6) is a high-purity analytical reference standard with the molecular formula C11H8D4N2O3 and a molecular weight of 224.25 g/mol.
Based on its molecular formula C11H8D4N2O3, 5-Hydroxy L-Tryptophan-d4 (Major) contains deuterium isotope labeling, an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 224.25 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C11H8D4N2O3 |
| Molecular Weight | 224.25 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Nitrogen Atoms | 2 |
Related Hydroxy Standards
- methyl 2-hydroxy-3-(2-methoxyphenyl)-2-methylpropanoate (CAS 1248492-18-3)
- Ethyl 3-hydroxy-3-(3-hydroxyphenyl)butanoate (CAS 1249059-47-9)
- Methyl 2-hydroxy-3-(2-methoxy-5-methylphenyl)propanoate (CAS 1485628-70-3)
- 10-Hydroxy-10-methylanthracen-9(10H)-one (CAS 17104-31-3)
- 4-Hydroxy-3-(1-hydroxypentyl)benzoic acid (CAS 17243-33-3)
- 2-Hydroxy-10,11-dihydro-5H-dibenzo[a,d][7]annulen-5-one (CAS 17910-73-5)
- Benzyl 3-hydroxy-2-(Hydroxymethyl)-2-methylpropanoate (CAS 179388-73-9)
- 4-Hydroxy-3,6,6-trimethyl-4,5,6,7-tetrahydro-1-benzofuran-2-carboxylic acid (CAS 585556-40-7)
Recommended Standards
- 2-Methyl-4-(2-methylbutyryl)phloroglucinol (CAS 124598-11-4)
- Methyl 4-(2,2-dimethoxyethyl)benzoate (CAS 124791-75-9)
- (S)-2-(2-(Benzyloxy)ethoxy)propanoic acid (CAS 124251-97-4)
- 3-(3,5-Dimethoxyphenyl)-2-methylpropanoic acid (CAS 122333-94-2)
- Ethyl 2-hydroxy-6-phenylnicotinate (CAS 58787-26-1)
- 5-chloro-7-iodo-1H-pyrazolo[4,3-d]pyrimidine (CAS 2821754-60-1)
- 7-(2-Methylphenyl)-3H,4H-thieno[3,2-d]pyrimidin-4-one (CAS 1030120-83-2)
- diethyl 2-({5-[2-(methoxycarbonyl)-3-thienyl]-2-furyl}methylene)malonate (CAS 241488-43-7)
- N-(4-methoxyphenyl)-1-tosylpiperidine-4-carboxamide (CAS 433946-91-9)
- N1-(2,4-Difluorophenyl)-N2-(2-fluorobenzyl)oxalamide (CAS 838871-36-6)
- Benzyl (S)-3-benzylpiperazine-1-carboxylate (CAS 1217977-09-7)
- 3-Methoxypyrazine 1-oxide (CAS 23902-69-4)
- 2-Isopropyl-5-nitropyridine (CAS 131941-21-4)
- Semaglutide impurity 43 (CAS CATO-C4X-222643)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com