30930-91-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 30930-91-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,0,9,3 and 0 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 30930-91:
(7*3)+(6*0)+(5*9)+(4*3)+(3*0)+(2*9)+(1*1)=97
97 % 10 = 7
So 30930-91-7 is a valid CAS Registry Number.