64543-58-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 64543-58-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,4,5,4 and 3 respectively; the second part has 2 digits, 5 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 64543-58:
(7*6)+(6*4)+(5*5)+(4*4)+(3*3)+(2*5)+(1*8)=134
134 % 10 = 4
So 64543-58-4 is a valid CAS Registry Number.