142821-78-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 142821-78-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,2,8,2 and 1 respectively; the second part has 2 digits, 7 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 142821-78:
(8*1)+(7*4)+(6*2)+(5*8)+(4*2)+(3*1)+(2*7)+(1*8)=121
121 % 10 = 1
So 142821-78-1 is a valid CAS Registry Number.