Das, Tapas; Kayet, Anirban; Mishra, Ruchika; Singh, Vinod K. published an article about the compound: 5-Methoxy-1H-indole-2-carbaldehyde( cas:21778-81-4,SMILESS:O=CC(N1)=CC2=C1C=CC(OC)=C2 ).Application of 21778-81-4. Aromatic heterocyclic compounds can be classified according to the number of heteroatoms or the size of the ring. The authors also want to convey more information about this compound (cas:21778-81-4) through the article.
A metal-free route to highly fluorescent 1,2-dihydropyrimido[1,6-α]indole derivatives I (R = H, OCH3, CH3, Br; Ar = C6H5, naphth-1-yl, furan-2-yl, etc.) has been developed via base catalyzed aldol followed by the Mannich reaction of indole-2-carboxaldehydes II with Et N-arylideneglycinates ArHC=NCH2COOEt at room temperature This transformation consists of the sequential formation of two new bonds to afford highly functionalized pyrimidoindole derivatives under mild reaction conditions.. Photophys. properties of the products have also been reported.
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Reference:
Pyridazine – Wikipedia,
Pyridazine | C4H4N2 – PubChem