281660-07-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 281660-07-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,8,1,6,6 and 0 respectively; the second part has 2 digits, 0 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 281660-07:
(8*2)+(7*8)+(6*1)+(5*6)+(4*6)+(3*0)+(2*0)+(1*7)=139
139 % 10 = 9
So 281660-07-9 is a valid CAS Registry Number.