55743-09-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 55743-09-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,5,7,4 and 3 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 55743-09:
(7*5)+(6*5)+(5*7)+(4*4)+(3*3)+(2*0)+(1*9)=134
134 % 10 = 4
So 55743-09-4 is a valid CAS Registry Number.
InChI:InChI=1/C17H14O5/c1-9-15(20)11(8-18)17-14(16(9)21)12(19)7-13(22-17)10-5-3-2-4-6-10/h2-6,8,13,20-21H,7H2,1H3/t13-/m0/s1