87707-55-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 87707-55-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,7,7,0 and 7 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 87707-55:
(7*8)+(6*7)+(5*7)+(4*0)+(3*7)+(2*5)+(1*5)=169
169 % 10 = 9
So 87707-55-9 is a valid CAS Registry Number.