91744-55-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 91744-55-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,7,4 and 4 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 91744-55:
(7*9)+(6*1)+(5*7)+(4*4)+(3*4)+(2*5)+(1*5)=147
147 % 10 = 7
So 91744-55-7 is a valid CAS Registry Number.