103819-42-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 103819-42-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,3,8,1 and 9 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 103819-42:
(8*1)+(7*0)+(6*3)+(5*8)+(4*1)+(3*9)+(2*4)+(1*2)=107
107 % 10 = 7
So 103819-42-7 is a valid CAS Registry Number.