31101-72-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 31101-72-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,1,1,0 and 1 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 31101-72:
(7*3)+(6*1)+(5*1)+(4*0)+(3*1)+(2*7)+(1*2)=51
51 % 10 = 1
So 31101-72-1 is a valid CAS Registry Number.