287717-34-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 287717-34-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,8,7,7,1 and 7 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 287717-34:
(8*2)+(7*8)+(6*7)+(5*7)+(4*1)+(3*7)+(2*3)+(1*4)=184
184 % 10 = 4
So 287717-34-4 is a valid CAS Registry Number.