100142-56-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 100142-56-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,0,1,4 and 2 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 100142-56:
(8*1)+(7*0)+(6*0)+(5*1)+(4*4)+(3*2)+(2*5)+(1*6)=51
51 % 10 = 1
So 100142-56-1 is a valid CAS Registry Number.