1221269-69-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1221269-69-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,2,1,2,6 and 9 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1221269-69:
(9*1)+(8*2)+(7*2)+(6*1)+(5*2)+(4*6)+(3*9)+(2*6)+(1*9)=127
127 % 10 = 7
So 1221269-69-7 is a valid CAS Registry Number.