143657-39-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 143657-39-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,3,6,5 and 7 respectively; the second part has 2 digits, 3 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 143657-39:
(8*1)+(7*4)+(6*3)+(5*6)+(4*5)+(3*7)+(2*3)+(1*9)=140
140 % 10 = 0
So 143657-39-0 is a valid CAS Registry Number.