CAS DataBase Reference: 1H,5H,11H,15H-Xantheno[2,3,4-ij:5,6,7-i'j']- diquinolizin-18-ium,9-(4-carboxy-2- sulfophenyl)-2,3,6,7,12,13,16,17-octahydro-,inner salt (CAS DataBase Reference)
NIST Chemistry Reference: 1H,5H,11H,15H-Xantheno[2,3,4-ij:5,6,7-i'j']- diquinolizin-18-ium,9-(4-carboxy-2- sulfophenyl)-2,3,6,7,12,13,16,17-octahydro-,inner salt (187091-48-1)
EPA Substance Registry System: 1H,5H,11H,15H-Xantheno[2,3,4-ij:5,6,7-i'j']- diquinolizin-18-ium,9-(4-carboxy-2- sulfophenyl)-2,3,6,7,12,13,16,17-octahydro-,inner salt (187091-48-1)
The CAS Registry Mumber 187091-48-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,7,0,9 and 1 respectively; the second part has 2 digits, 4 and 8 respectively. Calculate Digit Verification of CAS Registry Number 187091-48: (8*1)+(7*8)+(6*7)+(5*0)+(4*9)+(3*1)+(2*4)+(1*8)=161 161 % 10 = 1 So 187091-48-1 is a valid CAS Registry Number.
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