5-METHYL-DL-TRYPTOPHAN
- CAS NO.：951-55-3
- Empirical Formula: C12H14N2O2
- Molecular Weight: 218.25
- MDL number: MFCD00005652
- EINECS: 213-453-6
- SAFETY DATA SHEET (SDS)
- Update Date: 2025-07-16 09:56:26
What is 5-METHYL-DL-TRYPTOPHAN?
Chemical properties
off-white powder
What are the applications of Application
5-Methyl-DL-tryptophan is a corepressor of the E. coli trp repressor
Definition
ChEBI: 5-methyltryptophan is a tryptophan derivative that is tryptophan substituted by a methyl group at position 5 of the indole ring. It is a non-proteinogenic alpha-amino acid and a tryptophan derivative.
Purification Methods
Crystallise dl-5-methyltryptophan from aqueous EtOH after dissolving it in aqueous NaOH, precipitating with AcOH, filtering the solid off and drying for 24hours at 50o. [Jackman & Archer J Am Chem Soc 68 2105 1946, Beilstein 22 IV 6815.] The picrate crystallises from MeOH with m 202o(dec). The N-phenylcarbamoyl derivative crystallises from aqueous MeOH with m 202o. [Gordon & Jackson J Biol Chem 110 151, 154 1935.]
Properties of 5-METHYL-DL-TRYPTOPHAN
| Melting point: | ~275 °C (dec.) |
| Boiling point: | 358.94°C (rough estimate) |
| alpha | [α]D20 -1～+1゜ (c=1, dil. HCl) |
| Density | 1.1402 (rough estimate) |
| refractive index | 1.6660 (estimate) |
| storage temp. | Sealed in dry,Room Temperature |
| pka | 2.26±0.10(Predicted) |
| form | Powder |
| color | Off-white |
| BRN | 20225 |
| CAS DataBase Reference | 951-55-3(CAS DataBase Reference) |
Safety information for 5-METHYL-DL-TRYPTOPHAN
| Signal word | Warning |
| Pictogram(s) |
 Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H302:Acute toxicity,oral H317:Sensitisation, Skin |
| Precautionary Statement Codes |
P280:Wear protective gloves/protective clothing/eye protection/face protection. |
Computed Descriptors for 5-METHYL-DL-TRYPTOPHAN
New Products
Indole Methyl Resin tert-butyl 9-methoxy-3-azaspiro[5.5]undecane-3-carboxylate Boc-His(Boc)-OH 2-CTC Resin 4-Chloro-7-tosy1-7Hpyrrolo[2,3-d]pyrimidine 5,7-Dibromo-1H-indole 2,5-dichloro-N-hydroxy-4,6-dimethylpyridine-3-carboximidamide 2,2-Dimethoxy-7-azaspiro[3.5]nonane hydrochloride 4-chloromethyl-5-methyl-1,3-dioxol-2-one (DMDO-Cl) R-2-BENZYLOXY PROPIONIC ACID 1,1’-CARBONYLDIIMIDAZOLE 1,1’-CARBONYLDI (1,2-4 TRIAZOLE) N-METHYL INDAZOLE-3-CARBOXYLIC ACID 4-((2-hydroxyethyl)thio)benzoic acid 1-(TERT-BUTOXYCARBONYL)-2-PYRROLIDINONE Methyl 6-methylnicotinate 3-Pyridineacrylic acid tert-Butyl carbazate TETRAHYDRO-2H-PYRAN-3-OL 2-((4-morpholinophenylamino) (methylthio) methylene) malononitrile 3-(4-morpholinophenylamino)-5-amino-1H-pyrazole-4-carbonitrile 2,4-dihydroxybenzaldehyde 1,3-Diethyl-1,3-Diphenylurea Methyl 2-methylquinoline-6-carboxylateRelated products of tetrahydrofuran
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