71399-42-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 71399-42-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,1,3,9 and 9 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 71399-42:
(7*7)+(6*1)+(5*3)+(4*9)+(3*9)+(2*4)+(1*2)=143
143 % 10 = 3
So 71399-42-3 is a valid CAS Registry Number.