637334-99-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 637334-99-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,3,7,3,3 and 4 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 637334-99:
(8*6)+(7*3)+(6*7)+(5*3)+(4*3)+(3*4)+(2*9)+(1*9)=177
177 % 10 = 7
So 637334-99-7 is a valid CAS Registry Number.