Chemistry is traditionally divided into organic and inorganic chemistry. name: Methyl 3,6-dichloropyridazine-4-carboxylate, The former is the study of compounds containing at least one carbon-hydrogen bonds.In a patent，Which mentioned a new discovery about 286946-24-5
The present invention provides for compounds useful for treating an HIV infection, or preventing an HIV infection, or treating AIDS or ARC. The compounds of the invention are of formula I wherein A is A1, A2, A3 or A4 and R1, R2, R3, R4a, R4b, R5, R6, Ar, X1, X2, X4, X4 and X5 are as herein defined. Also disclosed in the present invention are methods of treating an HIV infection with compounds defined herein and pharmaceutical compositions containing said compounds. [image]
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Reference：
Pyridazine – Wikipedia,
Pyridazine | C4H4N2898 – PubChem