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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HCID 68340Generated: October 30, 2026

Taurocyamine

TAUROCYAMINE · SKL456 · NSC 667063 · Taurocyamin · Amidinotaurine · N-Guanyltaurine · N-Amidinotaurine · taurocyamine zwitterion

https://huagongshe.com/en/chemical/68340

Taurocyamine molecular structure

Identifiers & Physical Properties

CAS No.543-18-0
Molecular formulaC3H9N3O3S
Average molar mass167.19 g/mol
Monoisotopic mass167.03646215 g/mol
SMILESNC(N)=NCCS(=O)(=O)O
InChIKeyJKLRIMRKZBSSED-UHFFFAOYSA-N
PubChem CID68340
ChEMBLCHEMBL21832
ChEBICHEBI:17228
DTXSIDDTXSID10202654

Chemical & Physical Properties

Melting point263-265°C
Density1.73±0.1 g/cm3(Predicted)
Storage conditionsRefrigerator
SolubilityDMSO (Very Slightly, Heated), Methanol (Very Slightly, Heated), Water (Heated)
pKa (acidity coefficient)1.31±0.50(Predicted)
Physical stateSolid
ColorWhite to Off-White
InChI1S/C3H9N3O3S/c4-3(5)6-1-2-10(7,8)9/h1-2H2,(H4,4,5,6)(H,7,8,9)
InChIKeyJKLRIMRKZBSSED-UHFFFAOYSA-N
CAS DataBase Reference543-18-0
UNSPSC Code12352106
GHS pictogramGHS07
Signal wordWarning
GHS hazard statementsH302-H315-H319-H335
GHS precautionary statementsP261-P301+P312-P302+P352-P304+P340-P305+P351+P338
Risk statements (R)34
Safety statements (S)26-36/37/39
UN transport number3261
Water hazard class (WGK)WGK 3
Customs code2927000090
Storage class11 - Combustible Solids

Safety & Regulations

Water hazard class (WGK)WGK 3
UN transport number3261
Customs code2927000090
Risk statements (R)34
Signal wordWarning
GHS pictogramGHS07
Safety statements (S)26-36/37/39
Storage class11 - Combustible Solids
GHS hazard statementsH302-H315-H319-H335
GHS precautionary statementsP261-P301+P312-P302+P352-P304+P340-P305+P351+P338

Applications & Uses

Description

Guanidinoethyl sulfonate, also known as taurocyamine, is a natural guanidine-taurine analog derived from taurine. It is an intermediate of taurine and hypotaurine metabolism and is phosphorylated by taurocyamine kinase. Guanidinoethyl sulfonate competitively inhibits taurine uptake by sodium-dependent taurine transporters in rat hepatocytes (Ki = 1.75 mM). It also acts as a competitive glycine receptor antagonist in mouse striatal neurons. Plasma levels of guanidinoethyl sulfonate are significantly increased in patients with chronic renal failure.

Uses

A potent inhibitor of taurine transport.