Nikotin
1-methyl-2-(3-pyridyl)-pyrrolidin
C10H14N2 C10H14N2 Mr = 162,235
d: tv = 247 r20 = 1,009 4 nD20 = 1,528 0 [a]D20 = +163,2
l: tt = -79 tv = 247 r20 = 1,009 7 nD20 = 1,528 2 [a]D20 = -169
tv = 124 (2,4 kPa) nD20 = 1,527 [a]D20 = -161,55
dl: tv = 243 r20 = 1,008 2 nD20 = 1,528 9 pKb125 = 5,98 Kb125 = 1,05.10-6
tv = 107 (1,3 kPa) DHsp0 = -5 973,5 pKb225 = 10,88 Kb225 = 1,32.10-11
aq. az. (2,5 %,  99,85 °C) wvaq = nekoneč.


Nikotinamid C6H6N2O C6H6N2O Mr = 122,127
tt = 131 tv = 155 (0,07 Pa) r = 1,400 nD = 1,466 mvaq = 100


Nikotinová kyselina
(3-pyridinkarboxylová kys.)
C6H5NO2 C6H5NO2 Mr = 123,111
tt = 237 r25 = 1,473 p = 13,34 m15vaq = 1,3 m61vaq = 4,06
(pod tt sublimuje) m38vaq = 2,47 m100vaq = 9,76
rozp. EtOH (m15 = 0,92   m38 = 2,10   m61 = 4,20   m78 = 7,06)

Legenda
SLOUČENINY
Symboly, jednotky a použité zkratky
Periodická soustava prvků