75542-52-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 75542-52-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,5,5,4 and 2 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 75542-52:
(7*7)+(6*5)+(5*5)+(4*4)+(3*2)+(2*5)+(1*2)=138
138 % 10 = 8
So 75542-52-8 is a valid CAS Registry Number.