Hydrogen-1-(3-sulphonatopropyl)-2-[2-[[1-(3-sulphonatopropyl)naphtho[1,2-d]thiazol-2(1H)-ylidene]methyl]-1-butenyl]naphtho[1,2-d]thiazolium,sodium salt
Hydrogen-1-(3-sulphonatopropyl)-2-[2-[[1-(3-sulphonatopropyl)naphtho[1,2-d]thiazol-2(1H)-ylidene]methyl]-1-butenyl]naphtho[1,2-d]thiazolium,sodium salt