30771-20-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 30771-20-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,0,7,7 and 1 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 30771-20:
(7*3)+(6*0)+(5*7)+(4*7)+(3*1)+(2*2)+(1*0)=91
91 % 10 = 1
So 30771-20-1 is a valid CAS Registry Number.