ml-si3 ml-si3 ml-si3 is a chemical compound which acts as an "antagonist" (i.e. channel blocker) of the trpml family of calcium channels, with greatest activity at the trpml1 channel, although it also blocks the related trpml2 and trpml3 channels with lower affinity. it is used for research into the role of trpml1 and its various functions in lysosomes and elsewhere in the body. ml-si3identifiers iupac name n-cyclohexyl]benzenesulfonamide cas number891016-02-7pubchem cid94784693chemspider20304221chemical and physical dataformulac23h31n3o3smolar mass429.58 g·mol−13d model (jsmol)interactive image smiles coc1=cc=cc=c1n2ccn(cc2)3cccc3ns(=o)(=o)c4=cc=cc=c4 inchi inchi=1s/c23h31n3o3s/c1-29-23-14-8-7-13-22(23)26-17-15-25(16-18-26)21-12-6-5-11-20(21)24-30(27,28)19-9-3-2-4-10-19/h2-4,7-10,13-14,20-21,24h,5-6,11-12,15-18h2,1h3/t20-,21-/m0/s1key:ovtxommqhrikgl-sftdatjtsa-n