2116-30-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 2116-30-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,1,1 and 6 respectively; the second part has 2 digits, 3 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 2116-30:
(6*2)+(5*1)+(4*1)+(3*6)+(2*3)+(1*0)=45
45 % 10 = 5
So 2116-30-5 is a valid CAS Registry Number.