61856-13-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 61856-13-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,1,8,5 and 6 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 61856-13:
(7*6)+(6*1)+(5*8)+(4*5)+(3*6)+(2*1)+(1*3)=131
131 % 10 = 1
So 61856-13-1 is a valid CAS Registry Number.