30813-81-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 30813-81-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,0,8,1 and 3 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 30813-81:
(7*3)+(6*0)+(5*8)+(4*1)+(3*3)+(2*8)+(1*1)=91
91 % 10 = 1
So 30813-81-1 is a valid CAS Registry Number.