1213057-20-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1213057-20-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,1,3,0,5 and 7 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1213057-20:
(9*1)+(8*2)+(7*1)+(6*3)+(5*0)+(4*5)+(3*7)+(2*2)+(1*0)=95
95 % 10 = 5
So 1213057-20-5 is a valid CAS Registry Number.