33642-58-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 33642-58-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,3,6,4 and 2 respectively; the second part has 2 digits, 5 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 33642-58:
(7*3)+(6*3)+(5*6)+(4*4)+(3*2)+(2*5)+(1*8)=109
109 % 10 = 9
So 33642-58-9 is a valid CAS Registry Number.