838839-44-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 838839-44-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,3,8,8,3 and 9 respectively; the second part has 2 digits, 4 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 838839-44:
(8*8)+(7*3)+(6*8)+(5*8)+(4*3)+(3*9)+(2*4)+(1*4)=224
224 % 10 = 4
So 838839-44-4 is a valid CAS Registry Number.