M-N M Malonic Ester Malonic Ester Synthesis Mannich Base Mannich Reaction Markovnikov Addition Markovnikov’s Rule Mass-to-Charge Ratio McLafferty Rearrangement Mechanism Meisenheimer Complex Mercaptan Meso Compound Mesyl Chloride Mesyl Group Mesylate Group Meta Carbon Meta Directing Group Meta Disubstituted Benzene Methanesulfonyl Group Methanesulfonate Group Methanesulfonic Acid Methanesulfonyl Chloride Methylene Carbon Methylene Group Methyl Ketone Michael Acceptor Michael Addition Michael Adduct Michael Donor Mixed Anhydride Molar Absorption Coefficient Molar Absorptivity Molecular Formula Molecular Ion Molecular Ion Peak Molozonide Monochromatic Light Monocycloalkane Monosaccharide Monosubstituted Alkene Monoterpene Multiplicity Mutarotation N (n+1) Rule Neighboring Group Participation Newman Projection Nitrene Nitrile Nitrile Group Nitrogen Rule Nitrogen Ylide Nitro Group Nitronium Ion Nitroso Group Nitrosyl Cation N-nitrosamine No-bond Resonance Nominal Mass Nonaromatic Nonaromatic Annulene Nonaromatic Compound Non-Enolizable Aldehyde Non-Enolizable Ester Non-Enolizable Ketone Nonessential Amino Acid Nonessential Fatty Acid Nonreducing Sugar Nonsaponifiable Lipid Nonstandard Amino Acid Normal Alkane N-Terminal Nucleophile Nucleophilic Acyl Substitution Nucleophilic Addition Nucleophilic Aliphatic Substitution Nucleophilic Aromatic Substitution Nucleophilic Atom Nucleophilic Solvent Nucleophilic Substitution