m

Micro

m

Multiple (spectral), meter, milli

M

Moles per liter or mega

MAD

Methylaluminum bis(2,6-di-t-butyl-4-methylphenoxide

MALDI

Matrix assisted laser desorption/ionization

MAQ

2-(9,10-Anthraquinonyl)methyl / 2-methylene-anthraquinone

MBE

1-(Methyl-1-benzyloxyethyl

MBF

2,3,3a,4,5,6,7,7a-Octahydro-7,8,8-trimethyl-4,7-methanobenzofuran-2-yl

MBS/Mbs

p-Methoxybenzenesulfonyl

MCPBA

m-Chloroperbenzoic acid

Mds

2,6-Dimethyl-4-methoxybenzenesulfonyl

MEC

a-Methylcinnamyl

m/e

Mass to charge ratio (in MS)

MEM

a-Methoxyethoxymethyl

Menpoc

a-Methylnitropiperonyloxycarbonyl

MeOZ/Moz

p-Methoxybenzyloxycarbonyl

Mes

Mesityl 2,4,6-trimethylphenyl

MHz

Megahertz

min

Minute

MINDO

Modified intermediate neglect of differential overlap

MIP

Methoxyisopropyl/ 1-methyl-1-methoxyethyl

MM

Menthoxymethyl

mM

Millimoles per liter

MMT/MMTr

p-Methoxyphenyldiphenylmethyl

MO

Molecular orbital

mol

Mole

MOM

Methoxymethyl

MOMO

Methoxymethoxy

MoOPH

Oxodiperoxymolybdenum(pyridine) hexamethylphosphoramide

Moz/MeOZ

p-Methoxybenzyloxycarbonyl

MP

p-methoxyphenyl

mp

Melting point

MPM/PMB

p-Methoxyphenylmethyl or p-Methoxybenzyl

Mps

p-Methoxyphenylsufonyl

Mpt

Dimethylthiophosphinyl

mRNA

Messenger RNA

Ms

Methanesulfonyl or mesyl

MS

Mass spectrometry

MSA

Methanesulfonic acid

Msib

4-(Methylsulfinyl)benzyl

Msz

4-Methylsulfinylbenzyloxycarbonyl

Mtb

2,4,6-Trimethoxybenzenesufonyl

MTB

Methylthiobenzene

MTBE

t-Butyl methyl ether

Mte

2,3,5,6-Tetramethyl-4-methoxybenzenesulfonyl

MTHP

4-Methoxytetrahydropyranyl

MTM

Methylthiomethyl

MTMB

4-(Methylthiomethoxy)butyryl

MTMECO

2-(Methylthiomethoxy)ethoxycarbonyl

MTMT

2-(Methylthiomethoxymethyl)benzoxy

Mtpc

4-Methylthiophenoxycarbonyl

Mtr

2,3,6-Trimethyl-4-methoxybenzenesulfonyl

Mts

2,3,6-Trimethylbenzenesulfonyl(mesitylenesulfonyl)

m/z

Mass to charge ratio (in MS)

n

nao

NAD

Nicotinamide adenine dinucleotide

NADH

Reduced NAD

NBA

N-Bromoacetamide

NBOM

Nitrobenzyloxymethyl

NBS

N-Bromosuccinimide

NCS

N-Chlorosuccinimide

Ne

2-Nitroethyl

Ni(acac)₂

Nickel acetylacetonate

NIS

N-Iodosuccinimide

Ni(R)

Raney Nickel

NMM

N-Methyl morpholine

NMO

N-Methylmorpholine N-oxide

NMP

N-methylpyrrolidinone

NMR

Nuclear magnetic resonance

Noc

4-Nitrocinnamyloxycarbonyl

NOE

Nuclear Overhauser effect

NOESY

Nuclear Overhauser effect spectroscopy

Nosyl/Ns

2-or 4-Nitrobenzenesulfonyl

Npe/npe

2-(Nitrophenyl)ethyl

Npeoc

2-(4-Nitrophenyl)ethoxycarbonyl

Npes

2-(4-Nitrophenyl)ethylsulfonyl

NPS/Nps

2-Nitrophenylsulfenyl

Npys

3-Nitro-2-pyridinesulfenyl

Ns/Nosyl

2-or 4-Nitrobenzenesulfonyl

Nu

Nucleophile

NVOC/Nvoc

3,4-Dimethoxy-6-nitrobenzyloxycarbonyl/ 6-nitroveratryloxycarbonyl