139974-52-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 139974-52-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,9,7 and 4 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 139974-52:
(8*1)+(7*3)+(6*9)+(5*9)+(4*7)+(3*4)+(2*5)+(1*2)=180
180 % 10 = 0
So 139974-52-0 is a valid CAS Registry Number.