647823-75-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 647823-75-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,4,7,8,2 and 3 respectively; the second part has 2 digits, 7 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 647823-75:
(8*6)+(7*4)+(6*7)+(5*8)+(4*2)+(3*3)+(2*7)+(1*5)=194
194 % 10 = 4
So 647823-75-4 is a valid CAS Registry Number.