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L-Tryptophan, phenylmethyl ester, mono(4-methylbenzenesulfonate) is a complex organic compound with the chemical formula C21H22N2O5S. It is derived from the amino acid L-tryptophan, which is an essential amino acid that plays a crucial role in the biosynthesis of proteins and the production of serotonin, a neurotransmitter that regulates mood, appetite, and sleep. The phenylmethyl ester group is attached to the L-tryptophan molecule, which enhances its solubility and stability. The mono(4-methylbenzenesulfonate) group is a sulfonate ester that further modifies the compound's properties, making it suitable for various applications in pharmaceuticals, research, and chemical synthesis. L-Tryptophan, phenylmethyl ester, mono(4-methylbenzenesulfonate) is known for its potential therapeutic applications and is often used in scientific studies to understand the mechanisms of protein synthesis and neurotransmitter regulation.

4289-01-4

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4289-01-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 4289-01-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,2,8 and 9 respectively; the second part has 2 digits, 0 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 4289-01:
(6*4)+(5*2)+(4*8)+(3*9)+(2*0)+(1*1)=94
94 % 10 = 4
So 4289-01-4 is a valid CAS Registry Number.

4289-01-4SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 17, 2017

Revision Date: Aug 17, 2017

1.Identification

1.1 GHS Product identifier

Product name L-tryptophan benzyl ester p-toluenesulfonic acid salt

1.2 Other means of identification

Product number -
Other names (S)-2-Amino-3-(1H-indol-3-yl)-propionic acid benzyl ester

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

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More Details:4289-01-4 SDS

4289-01-4Relevant academic research and scientific papers

Esterification of unprotected a-Amino acids in ionic liquids as the reaction media

Biondini, Daniele,Brinchi, Lucia,Germani, Raimondo,Goracci, Laura,Savelli, Gianfranco

, p. 39 - 44 (2010)

Ionic liquid 1,3-dimethylimidazolium methanesulfonate was used to prepare a-amino acids benzylic esters from unprotected amino acids and benzyl chloride. Esterification of several amino acids was achieved with satisfactory yields: by-products can be removed by a simple work-up procedure to afford the pure product. The described method is simple, mild, rapid and save.

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