1219972-42-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1219972-42-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,1,9,9,7 and 2 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 1219972-42:
(9*1)+(8*2)+(7*1)+(6*9)+(5*9)+(4*7)+(3*2)+(2*4)+(1*2)=175
175 % 10 = 5
So 1219972-42-5 is a valid CAS Registry Number.