121974-70-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 121974-70-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,1,9,7 and 4 respectively; the second part has 2 digits, 7 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 121974-70:
(8*1)+(7*2)+(6*1)+(5*9)+(4*7)+(3*4)+(2*7)+(1*0)=127
127 % 10 = 7
So 121974-70-7 is a valid CAS Registry Number.