749834-55-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 749834-55-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,4,9,8,3 and 4 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 749834-55:
(8*7)+(7*4)+(6*9)+(5*8)+(4*3)+(3*4)+(2*5)+(1*5)=217
217 % 10 = 7
So 749834-55-7 is a valid CAS Registry Number.