142661-98-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 142661-98-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,2,6,6 and 1 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 142661-98:
(8*1)+(7*4)+(6*2)+(5*6)+(4*6)+(3*1)+(2*9)+(1*8)=131
131 % 10 = 1
So 142661-98-1 is a valid CAS Registry Number.