873384-21-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 873384-21-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,7,3,3,8 and 4 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 873384-21:
(8*8)+(7*7)+(6*3)+(5*3)+(4*8)+(3*4)+(2*2)+(1*1)=195
195 % 10 = 5
So 873384-21-5 is a valid CAS Registry Number.