91237-20-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 91237-20-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,2,3 and 7 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 91237-20:
(7*9)+(6*1)+(5*2)+(4*3)+(3*7)+(2*2)+(1*0)=116
116 % 10 = 6
So 91237-20-6 is a valid CAS Registry Number.
InChI:InChI=1/C25H24N2O6/c28-23(29)19-8-4-5-9-20(19)26-18-12-10-17(11-13-18)15-22(25(32)33)27-21(24(30)31)14-16-6-2-1-3-7-16/h1-13,21-22,26-27H,14-15H2,(H,28,29)(H,30,31)(H,32,33)/p-1/t21?,22-/m0/s1