142805-30-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 142805-30-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,2,8,0 and 5 respectively; the second part has 2 digits, 3 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 142805-30:
(8*1)+(7*4)+(6*2)+(5*8)+(4*0)+(3*5)+(2*3)+(1*0)=109
109 % 10 = 9
So 142805-30-9 is a valid CAS Registry Number.