Yanai, Mitsuji’s team published research in Journal of Heterocyclic Chemistry in 1970 | CAS: 27427-66-3

3,6-Dichloropyridazine-4-carboxamide(cas: 27427-66-3) belongs to anime. Milder oxidation, using reagents such as NaOCl, can remove four hydrogen atoms from primary amines of the type RCH2NH2 to form nitriles (R―C≡N), and oxidation with reagents such as MnO2 can remove two hydrogen atoms from secondary amines (R2CH―NHR′) to form imines (R2C=NR′). Tertiary amines can be oxidized to enamines (R2C=CHNR2) by a variety of reagents.Formula: C5H3Cl2N3O

In 1970,Journal of Heterocyclic Chemistry included an article by Yanai, Mitsuji; Kuraishi, Tsukasa; Kinoshita, Toshio; Nishimura, Masakuni. Formula: C5H3Cl2N3O. The article was titled 《Recyclization of 3-amino-6-chloroimidazo[4,5-c]pyridazine》. The information in the text is summarized as follows:

3-Benzylideneamino-6-chloroimidazo[4,5-c]pyridazine refluxed with HCl or AcOH gave 5-chloro-8-amino-s-triazolo-[4,5-b]pyridazine and 3-benzylid enehydrazino-4-amino-6-chloropyridazine.3,6-Dichloropyridazine-4-carboxamide(cas: 27427-66-3Formula: C5H3Cl2N3O) was used in this study.

3,6-Dichloropyridazine-4-carboxamide(cas: 27427-66-3) belongs to anime. Milder oxidation, using reagents such as NaOCl, can remove four hydrogen atoms from primary amines of the type RCH2NH2 to form nitriles (R―C≡N), and oxidation with reagents such as MnO2 can remove two hydrogen atoms from secondary amines (R2CH―NHR′) to form imines (R2C=NR′). Tertiary amines can be oxidized to enamines (R2C=CHNR2) by a variety of reagents.Formula: C5H3Cl2N3O

Referemce:
Pyridazine – Wikipedia,
Pyridazine | C4H4N2 – PubChem