List of straight-chain alkanes

The following is a list of straight-chain alkanes, the total number of isomers of each, and their common names, sorted by number of carbon atoms.

Number of C atoms	Number of isomers	Number of isomers including stereoisomers	Molecular Formula	Name of straight chain	Synonyms
1	1	1		methane	methyl hydride; natural gas
2	1	1		ethane	dimethyl; ethyl hydride; methyl methane
3	1	1		propane	dimethyl methane; propyl hydride
4	2	2		n-butane	butyl hydride; methylethyl methane
5	3	3		n-pentane	amyl hydride; Skellysolve A
6	5	5		n-hexane	dipropyl; Gettysolve-B; hexyl hydride; Skellysolve B
7	9	11		n-heptane	dipropyl methane; Gettysolve-C; heptyl hydride; Skellysolve C
8	18	24		n-octane	dibutyl; octyl hydride
9	35	55		n-nonane	nonyl hydride; Shellsol 140
10	75	136		n-decane	decyl hydride
11	159	345		n-undecane	hendecane
12	355	900		n-dodecane	adakane 12; bihexyl; dihexyl; duodecane
13	802			n-tridecane
14				n-tetradecane
15				n-pentadecane
16				n-hexadecane	cetane
17				n-heptadecane
18				n-octadecane
19				n-nonadecane
20				n-eicosane	didecyl; icosane
21				n-heneicosane	henicosane; uneicosane
22				n-docosane
23				n-tricosane
24				n-tetracosane
25				n-pentacosane
26				n-hexacosane	cerane
27				n-heptacosane
28				n-octacosane
29				n-nonacosane
30				n-triacontane
31				n-hentriacontane	untriacontane
32				n-dotriacontane	dicetyl
33				n-tritriacontane
34				n-tetratriacontane
35				n-pentatriacontane
36				n-hexatriacontane
37				n-heptatriacontane
38				n-octatriacontane
39				n-nonatriacontane
40				n-tetracontane
41				n-hentetracontane
42				n-dotetracontane
43				n-tritetracontane
44				n-tetratetracontane
45				n-pentatetracontane
46				n-hexatetracontane
47				n-heptatetracontane
48				n-octatetracontane
49				n-nonatetracontane
50				n-pentacontane
51				n-henpentacontane
52				n-dopentacontane
53				n-tripentacontane
54				n-tetrapentacontane
55				n-pentapentacontane
56				n-hexapentacontane
57				n-heptapentacontane
58				n-octapentacontane
59				n-nonapentacontane
60				n-hexacontane
61				n-henhexacontane
62				n-dohexacontane
63				n-trihexacontane
64				n-tetrahexacontane
65				n-pentahexacontane
66				n-hexahexacontane
67				n-heptahexacontane
68				n-octahexacontane
69				n-nonahexacontane
70				n-heptacontane
71				n-henheptacontane
72				n-doheptacontane
73				n-triheptacontane
74				n-tetraheptacontane
75				n-pentaheptacontane
76				n-hexaheptacontane
77				n-heptaheptacontane
78				n-octaheptacontane
79				n-nonaheptacontane
80				n-octacontane
81				n-henoctacontane
82				n-dooctacontane
83				n-trioctacontane
84				n-tetraoctacontane
85				n-pentaoctacontane
86				n-hexaoctacontane
87				n-heptaoctacontane
88				n-octaoctacontane
89				n-nonaoctacontane
90				n-nonacontane
91				n-hennonacontane
92				n-dononacontane
93				n-trinonacontane
94				n-tetranonacontane
95				n-pentanonacontane
96				n-hexanonacontane
97				n-heptanonacontane
98				n-octanonacontane
99				n-nonanonacontane
100				n-hectane
101				n-henhectane
102				n-dohectane
103				n-trihectane
104				n-tetrahectane
105				n-pentahectane
106				n-hexahectane
107				n-heptahectane
108				n-octahectane
109				n-nonahectane
110				n-decahectane
111				n-undecahectane
112				n-dodecahectane
113				n-tridecahectane
114				n-tetradecahectane
115				n-pentadecahectane
116				n-hexadecahectane
117				n-heptadecahectane
118				n-octadecahectane
119				n-nonadecahectane
120				n-eicosahectane