SYMBOL MEANING
C(O)CH3 acetyl
CBR2 dibromomethyl
CBR3 tribromomethyl
CCL2 dichloromethyl
CCL3 trichloromethyl
CF2 difluoromethyl
CF3 trifluoromethyl
CH methyne
CH2 methylene
CH3 methyl
CHO formyl
CI2 diiodomethyl
CI3 triiodomethyl
CN cyano
CO2H carboxy
COOH carboxy
COSH thiocarboxy
CS2H dithiocarboxy
CSSH dithiocarboxy
ET ethyl
ETO ethoxy
I-BU isobutyl
I-BUO isobutoxy
I-PR isopropyl
I-PRO isopropoxy
M-C6H4 m-phenylene
ME methyl
MEO methoxy
N-BU n-butyl
N-BUO n-butoxy
N-PR n-propyl
N-PRO n-propoxy
NH amine
NH2 amine
NH3 ammonia
NO2 nitro
O-C6H4 o-phenylene
OH hydroxy
OPO3H2 phosphate
OSO3H sulfate
P-C6H4 p-phenylene
PH phenyl
PHO phenoxy
PO3H2 phosphono
S-BU sec-butyl
S-BUO sec-butoxy
SH mercapto
SO2 sulfonyl
SO3H sulfo
T-BU tert-butyl
T-BUO tert-butoxy