1,2,3,4-Tetrahydro-2,6-naphthyridine Dihydrochloride is a salt analog of 1,2,3,4-Tetrahydro-2,6-naphthyridine (CAT# T295698), which is used in the synthetic preparation of quinolizidinone carboxylic acid selective M1 allosteric modulators. It may be useful in the preparation of isoquinolinylphenyloxazolidinone antibacterials and in the preparation of cyclohexanedicarboxamides as cathepsin inhibitors.