143979-23-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 143979-23-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,3,9,7 and 9 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 143979-23:
(8*1)+(7*4)+(6*3)+(5*9)+(4*7)+(3*9)+(2*2)+(1*3)=161
161 % 10 = 1
So 143979-23-1 is a valid CAS Registry Number.