515111-36-1 , WST-3 ; 4-[3-(4-Iodophenyl)-2-(2,4-dinitrophenyl)-2H-5-tetrazolio]-1,3-benzene disulfonate; 3-(2,4-Dinitrophenyl)-5-(2,4-disulfophenyl)-2-(4-iodophenyl)-2H-tetrazolium Inner Salt Sodium

515111-36-1 , WST-3 ;
4-[3-(4-Iodophenyl)-2-(2,4-dinitrophenyl)-2H-5-tetrazolio]-1,3-benzene disulfonate; 3-(2,4-Dinitrophenyl)-5-(2,4-disulfophenyl)-2-(4-iodophenyl)-2H-tetrazolium Inner Salt Sodium Sal
C19H10IN6NaO10S2 / 696.34

WST-3

4-[3-(4-Iodophenyl)-2-(2,4-dinitrophenyl)-2H-5-tetrazolio]-1,3-benzene disulfonate; 3-(2,4-Dinitrophenyl)-5-(2,4-disulfophenyl)-2-(4-iodophenyl)-2H-tetrazolium Inner Salt Sodium Sal

WST-3 is a water-soluble tetrazolium dye. It is reduced by NADH in the presence of an electron mediator, such as 1-methoxy-5-methylphenazinium (1-methoxy PMS;), to WST-3 formazan, which displays an absorption maxima of 433 nM.

WST-3 is a sensitive tetrazolium reagent (light red). It produces a water-soluble formazan (dark red color).

CAS Number	515111-36-1
Product Name	4-[3-(4-Iodophenyl)-2-(2,4-dinitrophenyl)-2H-5-tetrazolio]-1,3-benzenedisulfonate sodium salt
IUPAC Name	sodium;4-[2-(2,4-dinitrophenyl)-3-(4-iodophenyl)tetrazol-2-ium-5-yl]benzene-1,3-disulfonate
Molecular Formula	C19H10IN6NaO10S2
Molecular Weight	696.3 g/mol
InChI	InChI=1S/C19H11IN6O10S2.Na/c20-11-1-3-12(4-2-11)23-21-19(15-7-6-14(37(31,32)33)10-18(15)38(34,35)36)22-24(23)16-8-5-13(25(27)28)9-17(16)26(29)30;/h1-10H,(H-,31,32,33,34,35,36);/q;+1/p-1
InChI Key	LKVNWZJLLRMMAS-UHFFFAOYSA-M
SMILES	C1=CC(=CC=C1N2N=C(N=[N+]2C3=C(C=C(C=C3)[N+](=O)[O-])[N+](=O)[O-])C4=C(C=C(C=C4)S(=O)(=O)[O-])S(=O)(=O)[O-])I.[Na+]
Solubility	Soluble in DMSO
Synonyms	WST-3; WST 3; WST3;
Canonical SMILES	C1=CC(=CC=C1N2N=C(N=[N+]2C3=C(C=C(C=C3)[N+](=O)[O-])[N+](=O)[O-])C4=C(C=C(C=C4)S(=O)(=O)[O-])S(=O)(=O)[O-])I.[Na+]