31702-89-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 31702-89-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,1,7,0 and 2 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 31702-89:
(7*3)+(6*1)+(5*7)+(4*0)+(3*2)+(2*8)+(1*9)=93
93 % 10 = 3
So 31702-89-3 is a valid CAS Registry Number.