19649-33-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 19649-33-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,6,4 and 9 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 19649-33:
(7*1)+(6*9)+(5*6)+(4*4)+(3*9)+(2*3)+(1*3)=143
143 % 10 = 3
So 19649-33-3 is a valid CAS Registry Number.