6857-44-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 6857-44-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,8,5 and 7 respectively; the second part has 2 digits, 4 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 6857-44:
(6*6)+(5*8)+(4*5)+(3*7)+(2*4)+(1*4)=129
129 % 10 = 9
So 6857-44-9 is a valid CAS Registry Number.