Chemistry is traditionally divided into organic and inorganic chemistry. Formula: C4H6N4, The former is the study of compounds containing at least one carbon-hydrogen bonds.In a patent，Which mentioned a new discovery about 61070-99-3
The invention provides photosensitive diamines, polyamide acid and derivatives thereof, liquid crystal aligning agents, liquid crystal alignment films and liquid crystal display devices. The liquid crystal aligning agents containing the polyamide acid, which is obtained through reactions between diamine components containing photosensitive diamines represented by a formula (1) and Tetracarboxylic acid dianhydride, or the derivatives thereof can form the liquid crystal alignment films having high transmittance and high orientation. In the formula (1), cyclo A and cyclo B are monocyclic hydrocarbon, condensed polycyclic hydrocarbon or heterocyclic; R1 is a straight-chain alkylene group, -COO-, -OCO-, -NHCO- or -N(CH3)CO- which have 2 to 20 carbon atoms; R2 is a straight-chain alkylene group, -COO-, -OCO-, -CONH- or -CON(CH3)- which have 2 to 20 carbon atoms; Ra-Rd are respectively and independently -F, -CH3, -OCH3, -CF3 or -OH; and a-d are integers of 0 to 4.
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Reference：
Pyridazine – Wikipedia,
Pyridazine | C4H4N364 – PubChem