861561-83-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 861561-83-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,6,1,5,6 and 1 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 861561-83:
(8*8)+(7*6)+(6*1)+(5*5)+(4*6)+(3*1)+(2*8)+(1*3)=183
183 % 10 = 3
So 861561-83-3 is a valid CAS Registry Number.