ChemicalBook > CAS DataBase List > 5-METHYL-DL-TRYPTOPHAN

5-METHYL-DL-TRYPTOPHAN

Product Name: 5-METHYL-DL-TRYPTOPHAN
CAS No.: 951-55-3
Chemical Name: 5-METHYL-DL-TRYPTOPHAN
Synonyms: H-Trp(5-Me)-OH;H-5-ME-DL-TRP-OH;H-DL-Trp(5-Me)-OH;TIMTEC-BB SBB003368;5-METHYL-DL-TRYPTOPH;DL-5-METHYLTRYPTOPHAN;5-METHYL-DL-TRYPTOPHAN;Tryptophan Impurity 101;5-Methyl-DL-tryptophan>5-Methyl-DL-tryptophan,98%
CBNumber: CB5417694
Molecular Formula: C12H14N2O2
Formula Weight: 218.25
MOL File: 951-55-3.mol

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5-METHYL-DL-TRYPTOPHAN Property

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
form: Powder
pka: 2.26±0.10(Predicted)
color: Off-white
optical activity: 0.20°(C=1.00g/100ml HCL)
BRN: 20225
CAS DataBase Reference: 951-55-3(CAS DataBase Reference)

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Safety

Safety Statements: 22-24/25
WGK Germany: 3
F: 8
HS Code: 29339900

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Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H302Harmful if swallowed

H317May cause an allergic skin reaction

Precautionary statements

P280Wear protective gloves/protective clothing/eye protection/face protection.

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N-Bromosuccinimide Price

Sigma-Aldrich

Product number: M0534
Product name: 5-Methyl-DL-tryptophan
Purity: tryptophan analog
Packaging: 250mg
Price: $250.25
Updated: 2025/07/31

Sigma-Aldrich

Product number: M0534
Product name: 5-Methyl-DL-tryptophan
Purity: tryptophan analog
Packaging: 1g
Price: $545
Updated: 2025/07/31

TCI Chemical

Product number: M0452
Product name: 5-Methyl-DL-tryptophan
Purity: >98.0%(T)(HPLC)
Packaging: 100mg
Price: $69
Updated: 2025/07/31

TCI Chemical

Product number: M0452
Product name: 5-Methyl-DL-tryptophan
Purity: >98.0%(T)(HPLC)
Packaging: 1g
Price: $563
Updated: 2025/07/31

Usbiological

Product number: 284106
Product name: 5-Methyl-DL-tryptophan
Packaging: 250mg
Price: $375
Updated: 2021/12/16

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5-METHYL-DL-TRYPTOPHAN Chemical Properties,Usage,Production

Chemical Properties

off-white powder

Uses

peptide synthesis

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.

Biological Activity

5-Methyl-DL-tryptophan inhibits the synthesis of anthranilate compounds th at are the first steps in the biosynthesis of tryptophan in Neurospora crassa. 5-Methyl-DL-tryptophan is a corepressor of the E. coli trp repressor.', '5-Methyl-DL-tryptophan may be used to select genetic mutants of PS strain of Methanococcus voltae (archaebacteria). 5-Methyl-tryptophan is a repressor trp operon expression. 5-Methyl-tryptophan is a substrate for tryptophanase. 5-Methyl-tryptophan inhibits the induction of anthranilate synthase activity by elicitors in oats.

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.]

5-METHYL-DL-TRYPTOPHAN Preparation Products And Raw materials

Raw materials

Preparation Products

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951-55-3, 5-METHYL-DL-TRYPTOPHANRelated Search:

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5-Methyl-DL-tryptophan&gt

H-DL-Trp(5-Me)-OH

5-METHYL-DL-TRYPTOPHAN USP/EP/BP

5-Methyl-<sc>DL</sc>-tryptophan

Tryptophan Impurity 101

951-55-3

75385-73-0

Peptide Synthesis

Specialty Synthesis

Unnatural Amino Acid Derivatives

Tryptophan Derivatives

Indoles

Tryptophans

Amino Acids

Biochemistry

Biological-modified Amino Acids

Indoles

Tryptophans

Amino acids methyl、ethyl、t-butyl series

Peptide Synthesis

I - ZPeptide Synthesis

Tryptophan Derivatives

Amino Acids

Modified Amino Acids

Unnatural Amino Acid Derivatives

Indoles and derivatives