19902-44-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 19902-44-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,9,0 and 2 respectively; the second part has 2 digits, 4 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 19902-44:
(7*1)+(6*9)+(5*9)+(4*0)+(3*2)+(2*4)+(1*4)=124
124 % 10 = 4
So 19902-44-4 is a valid CAS Registry Number.