1,8-Naphthyridine-3-carboxylic acid, 1,4-dihydro-7-(3-(1-amino-1-methylethyl)-1-pyrrolidinyl)-1-cyclopropyl-6-fluoro-4-oxo-, hydrochloride (5:6), (R)- 153566-55-3 PD 138312 hydrochloride