23766-20-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 23766-20-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,3,7,6 and 6 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 23766-20:
(7*2)+(6*3)+(5*7)+(4*6)+(3*6)+(2*2)+(1*0)=113
113 % 10 = 3
So 23766-20-3 is a valid CAS Registry Number.