6555-87-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 6555-87-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,5,5 and 5 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 6555-87:
(6*6)+(5*5)+(4*5)+(3*5)+(2*8)+(1*7)=119
119 % 10 = 9
So 6555-87-9 is a valid CAS Registry Number.