71707-56-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 71707-56-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,1,7,0 and 7 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 71707-56:
(7*7)+(6*1)+(5*7)+(4*0)+(3*7)+(2*5)+(1*6)=127
127 % 10 = 7
So 71707-56-7 is a valid CAS Registry Number.