1231978-70-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1231978-70-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,3,1,9,7 and 8 respectively; the second part has 2 digits, 7 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1231978-70:
(9*1)+(8*2)+(7*3)+(6*1)+(5*9)+(4*7)+(3*8)+(2*7)+(1*0)=163
163 % 10 = 3
So 1231978-70-3 is a valid CAS Registry Number.