1979-23-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1979-23-3 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,9,7 and 9 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1979-23:
(6*1)+(5*9)+(4*7)+(3*9)+(2*2)+(1*3)=113
113 % 10 = 3
So 1979-23-3 is a valid CAS Registry Number.