71915-55-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 71915-55-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,1,9,1 and 5 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 71915-55:
(7*7)+(6*1)+(5*9)+(4*1)+(3*5)+(2*5)+(1*5)=134
134 % 10 = 4
So 71915-55-4 is a valid CAS Registry Number.