105104-83-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 105104-83-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,5,1,0 and 4 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 105104-83:
(8*1)+(7*0)+(6*5)+(5*1)+(4*0)+(3*4)+(2*8)+(1*3)=74
74 % 10 = 4
So 105104-83-4 is a valid CAS Registry Number.