22761-21-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 22761-21-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,2,7,6 and 1 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 22761-21:
(7*2)+(6*2)+(5*7)+(4*6)+(3*1)+(2*2)+(1*1)=93
93 % 10 = 3
So 22761-21-3 is a valid CAS Registry Number.