278788-87-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 278788-87-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,7,8,7,8 and 8 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 278788-87:
(8*2)+(7*7)+(6*8)+(5*7)+(4*8)+(3*8)+(2*8)+(1*7)=227
227 % 10 = 7
So 278788-87-7 is a valid CAS Registry Number.