Cysteine- S- sulfonic acid

Structural formula
General
Surname	Cysteine- S- sulfonic acid
other names	S- sulfo- L -cysteine; Cysteine S sulfate; Cysteine S- sulfonate; Cysteinyl S- sulfonate; Cysteinyl S -sulfonic acid; S sulfocysteine; ( R ) -Cysteine S- sulfate; ( R ) -Cysteine S- sulfonate; ( R ) -Cysteinyl- S- sulfonate; ( R ) -Cysteinyl- S- sulfonic acid; ( R ) - S sulfocysteine;
Molecular formula	C 3 H 7 NO 5 S 2
External identifiers / databases
EC number	634-089-8
ECHA InfoCard	100.162.102
PubChem	115015
ChemSpider	102939
DrugBank	DB04370
Wikidata	Q27095171
properties
Molar mass	201.22 g mol −1
safety instructions
GHS labeling of hazardous substances Caution
H and P phrases	H: 315-319-335
	P: 261-305 + 351 + 338
	As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

L- cysteine- S- sulfonic acid (LCSS) is a chemical compound from the group of non-proteinogenic amino acids .

properties

L- cysteine- S- sulfonic acid is an analogue of glutamic acid . It activates the NMDA receptor . In addition, it binds to the glutamate receptor on the tongue and triggers an umami taste.

↑ ^a ^b Data sheet L-Cysteine S-sulfate, ≥98% (TLC) from Sigma-Aldrich , accessed on October 3, 2018 ( PDF ).
^ R. Nahum-Levy, D. Lipinski, S. Shavit, M. Benveniste: Desensitization of NMDA receptor channels is modulated by glutamate agonists. In: Biophysical Journal . Volume 80, number 5, May 2001, pp. 2152-2166, doi : 10.1016 / S0006-3495 (01) 76188-7 , PMID 11325718 , PMC 1301407 (free full text).
↑ Hans-Dieter Belitz , Werner Grosch : Textbook of food chemistry. Springer-Verlag, 2007, ISBN 978-3-540-73202-0 , p. 442.