77744-47-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 77744-47-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,7,4 and 4 respectively; the second part has 2 digits, 4 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 77744-47:
(7*7)+(6*7)+(5*7)+(4*4)+(3*4)+(2*4)+(1*7)=169
169 % 10 = 9
So 77744-47-9 is a valid CAS Registry Number.