288400-65-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 288400-65-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,8,8,4,0 and 0 respectively; the second part has 2 digits, 6 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 288400-65:
(8*2)+(7*8)+(6*8)+(5*4)+(4*0)+(3*0)+(2*6)+(1*5)=157
157 % 10 = 7
So 288400-65-7 is a valid CAS Registry Number.