83561-07-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 83561-07-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,3,5,6 and 1 respectively; the second part has 2 digits, 0 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 83561-07:
(7*8)+(6*3)+(5*5)+(4*6)+(3*1)+(2*0)+(1*7)=133
133 % 10 = 3
So 83561-07-3 is a valid CAS Registry Number.