551-90-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 551-90-6 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 5,5 and 1 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 551-90:
(5*5)+(4*5)+(3*1)+(2*9)+(1*0)=66
66 % 10 = 6
So 551-90-6 is a valid CAS Registry Number.
InChI:InChI=1/C23H28I2O4/c1-22(2,3)15-11-14(12-16(20(15)28)23(4,5)6)29-21-17(24)9-13(10-18(21)25)7-8-19(26)27/h9-12,28H,7-8H2,1-6H3,(H,26,27)