22787-71-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 22787-71-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,2,7,8 and 7 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 22787-71:
(7*2)+(6*2)+(5*7)+(4*8)+(3*7)+(2*7)+(1*1)=129
129 % 10 = 9
So 22787-71-9 is a valid CAS Registry Number.