1H,5H,11H,15H-Xantheno(2,3,4-ij:5,6,7-i'j')diquinolizin-18-ium, 9-(2(or 4)-(chlorosulfonyl)phenyl)-2,3,6,7,12,13,16,17-octahydro- 82354-19-6 Sulforhodamine sulfonyl chloride Texas red