1-Methyl-L-tryptophan CAS 21339-55-9
| CAS No. | 21339-55-9 |
| Molecular Formula | C12H14N2O2 |
| Molecular Weight | 218.25 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 1-Methyl-L-tryptophan.
1-Methyl-L-tryptophan (CAS 21339-55-9) is a high-purity analytical reference standard with the molecular formula C12H14N2O2 and a molecular weight of 218.25 g/mol.
Structurally, 1-Methyl-L-tryptophan (C12H14N2O2) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 7.0, corresponding to approximately 7 ring(s) or double-bond equivalent(s). With a molecular weight of 218.25 g/mol, it falls into the medium-molecular-weight range. 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 | C12H14N2O2 |
| Molecular Weight | 218.25 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1963 |
| Nitrogen Atoms | 2 |
Recommended Standards
- 1-Hydroxypyrene (CAS 5315-79-7)
- Abrine (CAS 526-31-8)
- Nε-(1-Carboxyethyl)-L-lysine，Mixture of Diastereomers (CAS 5746-03-2)
- H-4-Me-DL-Trp-OH (CAS 1954-45-6)
- 1-(4-Fluoro-2-(trifluoromethyl)phenyl)ethanone (CAS 208173-21-1)
- Ethyl 2-(4-methoxyphenyl)ethanimidate hydrochloride (CAS 58125-69-2)
- 3-(5-Chloro-2-thienyl)-1-propene (CAS 173415-71-9)
- 2-(7-(Trifluoromethyl)chroman-4-yl)acetic acid (CAS 1121583-64-9)
- 2-[(2,5-dimethylfuran-3-yl)carbonylamino]benzoate 2-[[(2,5-dimethyl-3-furanyl)-oxomethyl]amino]benzoate 357420-38-3 A822966 (CAS 357420-38-3)
- Tert-butyl ((S)-1-((S)-2-cyano-4,4-difluoropyrrolidin-1-yl)-1-oxopropan-2-yl)carbamate (CAS 2230625-73-5)
- Ethyl 2-(4-fluorophenyl)-5-hydroxy-6-nitrobenzofuran-3-carboxylate (CAS 691857-46-2)
- 2-Hydroxy-6-(2-methylphenyl)pyridine (CAS 300395-32-8)
- (S)-2-amino-2-(3-methoxy-5-methylphenyl)ethan-1-ol (CAS 1335834-42-8)
- Peptide 74 (H-8545.0500) (CAS 132116-39-3)
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