1-Methylpiperazine dihydrochloride34352-59-531 % similar 2-Methyl-L-proline methyl ester hydrochloride220060-08-231 % similar Methyl isonipecotate hydrochloride7462-86-431 % similar (2S)-2-Methylmorpholine hydrochloride1147108-99-330 % similar (3R)-3-Methoxypyrrolidine hydrochloride474707-30-730 % similar (S)-3-Methoxy-pyrrolidine hydrochloride685828-16-430 % similar 3-Methoxyazetidine hydrochloride148644-09-130 % similar 1,4-Oxazepane hydrochloride178312-62-430 % similar