1213128-56-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1213128-56-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,1,3,1,2 and 8 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 1213128-56:
(9*1)+(8*2)+(7*1)+(6*3)+(5*1)+(4*2)+(3*8)+(2*5)+(1*6)=103
103 % 10 = 3
So 1213128-56-3 is a valid CAS Registry Number.