letosteine letosteine letosteine is a mucolytic patented (u.s. patent 6987120) by piero del soldato of milan, italy. he filed his application in 2000. letosteineclinical datatrade namesviscotiolother names2--1,3-thiazolidine-4-carboxylic acidroutes ofadministrationoral (gastroresistant capsules)atc coder05cb09 (who) identifiers iupac name 2--1,3-thiazolidine-4-carboxylic acid cas number53943-88-7 ypubchem cid68707drugbankdb08939 nchemspider61958 yunii6mvf9u95dwkeggd07380 ychebichebi:88271 necha infocard100.053.509 chemical and physical dataformulac10h17no4s2molar mass279.37 g·mol−13d model (jsmol)interactive image smiles o=c(o)c1nc(sc1)ccscc(=o)occ inchi inchi=1s/c10h17no4s2/c1-2-15-9(12)6-16-4-3-8-11-7(5-17-8)10(13)14/h7-8,11h,2-6h2,1h3,(h,13,14) ykey:ikoclispvjzjea-uhfffaoysa-n y ny (what is this?) (verify)