71764-58-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 71764-58-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,1,7,6 and 4 respectively; the second part has 2 digits, 5 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 71764-58:
(7*7)+(6*1)+(5*7)+(4*6)+(3*4)+(2*5)+(1*8)=144
144 % 10 = 4
So 71764-58-4 is a valid CAS Registry Number.