658702-55-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 658702-55-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,5,8,7,0 and 2 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 658702-55:
(8*6)+(7*5)+(6*8)+(5*7)+(4*0)+(3*2)+(2*5)+(1*5)=187
187 % 10 = 7
So 658702-55-7 is a valid CAS Registry Number.