223697-40-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 223697-40-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,3,6,9 and 7 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 223697-40:
(8*2)+(7*2)+(6*3)+(5*6)+(4*9)+(3*7)+(2*4)+(1*0)=143
143 % 10 = 3
So 223697-40-3 is a valid CAS Registry Number.