142438-61-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 142438-61-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,2,4,3 and 8 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 142438-61:
(8*1)+(7*4)+(6*2)+(5*4)+(4*3)+(3*8)+(2*6)+(1*1)=117
117 % 10 = 7
So 142438-61-7 is a valid CAS Registry Number.