2102-30-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 2102-30-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,1,0 and 2 respectively; the second part has 2 digits, 3 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 2102-30:
(6*2)+(5*1)+(4*0)+(3*2)+(2*3)+(1*0)=29
29 % 10 = 9
So 2102-30-9 is a valid CAS Registry Number.