Chemistry:List of straight-chain alkanes

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The following is a list of straight-chain alkanes, the total number of isomers of each (including branched chains), and their common names, sorted by number of carbon atoms.[1][2]

Number of C atoms Number of isomers[3][4] Number of isomers including stereoisomers[3][5] Molecular Formula Name of straight chain Synonyms
1 1 1 CH
4
methane methyl hydride; natural gas
2 1 1 C
2
H
6
ethane dimethyl; ethyl hydride; methyl methane
3 1 1 C
3
H
8
propane dimethyl methane; propyl hydride
4 2 2 C
4
H
10
n-butane butyl hydride; methylethyl methane
5 3 3 C
5
H
12
n-pentane amyl hydride; Skellysolve A
6 5 5 C
6
H
14
n-hexane dipropyl; Gettysolve-B; hexyl hydride; Skellysolve B
7 9 11 C
7
H
16
n-heptane dipropyl methane; Gettysolve-C; heptyl hydride; Skellysolve C
8 18 24 C
8
H
18
n-octane dibutyl; octyl hydride
9 35 55 C
9
H
20
n-nonane nonyl hydride; Shellsol 140
10 75 136 C
10
H
22
n-decane decyl hydride
11 159 345 C
11
H
24
n-undecane hendecane
12 355 900 C
12
H
26
n-dodecane adakane 12; bihexyl; dihexyl; duodecane
13 802 2412 C
13
H
28
n-tridecane
14 1858 6563 C
14
H
30
n-tetradecane
15 4347 18127 C
15
H
32
n-pentadecane
16 10359 50699 C
16
H
34
n-hexadecane cetane
17 24894 143255 C
17
H
36
n-heptadecane
18 60523 408429 C
18
H
38
n-octadecane
19 148284 1173770 C
19
H
40
n-nonadecane
20 366319 3396844 C
20
H
42
n-icosane didecyl icosane
21 910726 9892302 C
21
H
44
n-henicosane henicosane
22 2278658 28972080 C
22
H
46
n-docosane
23 5731580 85289390 C
23
H
48
n-tricosane
24 14490245 252260276 C
24
H
50
n-tetracosane tetrakosane
25 36797588 749329719 C
25
H
52
n-pentacosane
26 93839412 2234695030 C
26
H
54
n-hexacosane cerane; hexeikosane
27 240215803 6688893605 C
27
H
56
n-heptacosane
28 617105614 20089296554 C
28
H
58
n-octacosane
29 1590507121 60526543480 C
29
H
60
n-nonacosane
30 4111846763 182896187256 C
30
H
62
n-triacontane
31 10660307791 554188210352 C
31
H
64
n-hentriacontane untriacontane
32 27711253769 1683557607211 C
32
H
66
n-dotriacontane dicetyl
33 72214088660 5126819371356 C
33
H
68
n-tritriacontane
34 188626236139 15647855317080 C
34
H
70
n-tetratriacontane
35 493782952902 47862049187447 C
35
H
72
n-pentatriacontane
36 1295297588128 146691564302648 C
36
H
74
n-hexatriacontane
37 3404490780161 450451875783866 C
37
H
76
n-heptatriacontane
38 8964747474595 1385724615285949 C
38
H
78
n-octatriacontane
39 23647478933969 4270217915878409 C
39
H
80
n-nonatriacontane
40 62481801147341 13180446189326135 C
40
H
82
n-tetracontane
41 165351455535782 40745751356421890 C
41
H
84
n-hentetracontane
42 438242894769226 126146261761339138 C
42
H
86
n-dotetracontane
43 1163169707886427 391089580997271932 C
43
H
88
n-tritetracontane
44 3091461011836856 1214115357550059889 C
44
H
90
n-tetratetracontane
45 8227162372221203 3773978539594435261 C
45
H
92
n-pentatetracontane
46 21921834086683418 1.17454674499017×1019 C
46
H
94
n-hexatetracontane
47 58481806621987010 3.65973634249825×1019 C
47
H
96
n-heptatetracontane
48 156192366474590639 1.14160680977903×1020 C
48
H
98
n-octatetracontane
49 417612400765382272 3.56492605035317×1020 C
49
H
100
n-nonatetracontane
50 1117743651746953270 1.11437894744930×1021 C
50
H
102
n-pentacontane
51 2994664179967370611 3.48695195511947×1021 C
51
H
104
n-henpentacontane
52 8031081780535296591 1.09212674104354×1022 C
52
H
106
n-dopentacontane
53 2.15577719135726×1019 3.42372129990732×1022 C
53
H
108
n-tripentacontane
54 5.79191808731484×1019 1.07425456458975×1023 C
54
H
110
n-tetrapentacontane
55 1.55745431857550×1020 3.37353654348452×1023 C
55
H
112
n-pentapentacontane
56 4.19149571193412×1020 1.06027803437626×1024 C
56
H
114
n-hexapentacontane
57 1.12893957836133×1021 3.33501408819192×1024 C
57
H
116
n-heptapentacontane
58 3.04304357190683×1021 1.04980159528436×1025 C
58
H
118
n-octapentacontane
59 8.20861536686375×1021 3.30702230705762×1025 C
59
H
120
n-nonapentacontane
60 2.21587345357704×1022 1.04250134336061×1026 C
60
H
122
n-hexacontane
61 5.98580978477069×1022 3.28863382009164×1026 C
61
H
124
n-henhexacontane
62 1.61805725349297×1023 1.03811173709570×1027 C
62
H
126
n-dohexacontane
63 4.37671691526159×1023 3.27908841257682×1027 C
63
H
128
n-trihexacontane
64 1.18461618538531×1024 1.03641522884615×1028 C
64
H
130
n-tetrahexacontane
65 3.20828506618148×1024 3.27776398697850×1028 C
65
H
132
n-pentahexacontane
66 8.69413071202487×1024 1.03723411195159×1029 C
66
H
134
n-hexahexacontane
67 2.35737961344482×1025 3.28415364073692×1029 C
67
H
136
n-heptahexacontane
68 6.39551595273481×1025 1.04042406553793×1030 C
68
H
138
n-octahexacontane
69 1.73603007393950×1026 3.29784745978795×1030 C
69
H
140
n-nonahexacontane
70 4.71484798515330×1026 1.04586901217870×1031 C
70
H
142
n-heptacontane
71 1.28115131576464×1027 3.31851797512264×1031 C
71
H
144
n-henheptacontane
72 3.48296574914069×1027 1.05347699979053×1032 C
72
H
146
n-doheptacontane
73 9.47344738680449×1027 3.34590848928408×1032 C
73
H
148
n-triheptacontane
74 2.57793062389544×1028 1.06317688936105×1033 C
74
H
150
n-tetraheptacontane
75 7.01832115122141×1028 3.37982367012913×1033 C
75
H
152
n-pentaheptacontane
76 1.91156381393249×1029 1.07491568187130×1034 C
76
H
154
n-hexaheptacontane
77 5.20874195248907×1029 3.42012195021483×1034 C
77
H
156
n-heptaheptacontane
78 1.41990891534395×1030 1.08865635628610×1035 C
78
H
158
n-octaheptacontane
79 3.87228257513701×1030 3.46670937556328×1035 C
79
H
160
n-nonaheptacontane
80 1.05644769069467×1031 1.10437611939016×1036 C
80
H
162
n-octacontane
81 2.88336094362773×1031 3.51953462699296×1036 C
81
H
164
n-henoctacontane
82 7.87255854643910×1031 1.12206499012211×1037 C
82
H
166
n-dooctacontane
83 2.15027809474797×1032 3.57858499756067×1037 C
83
H
168
n-trioctacontane
84 5.87531723826577×1032 1.14172465774427×1038 C
84
H
170
n-tetraoctacontane
85 1.60591377849471×1033 3.64388315587311×1038 C
85
H
172
n-pentaoctacontane
86 4.39100290809332×1033 1.16336756600997×1039 C
86
H
174
n-hexaoctacontane
87 1.20102579077569×1034 3.71548456067735×1039 C
87
H
176
n-heptaoctacontane
88 3.28612955581209×1034 1.18701618541837×1040 C
88
H
178
n-octaoctacontane
89 8.99409590248916×1034 3.79347541983580×1040 C
89
H
180
n-nonaoctacontane
90 2.46245150242821×1035 1.21270244338682×1041 C
90
H
182
n-nonacontane
91 6.74391606297983×1035 3.87797110845861×1041 C
91
H
184
n-hennonacontane
92 1.84751504801261×1036 1.24046728824609×1042 C
92
H
186
n-dononacontane
93 5.06281811212116×1036 3.96911497803001×1042 C
93
H
188
n-trinonacontane
94 1.38778575295845×1037 1.27036036776471×1043 C
94
H
190
n-tetranonacontane
95 3.80518360708038×1037 4.06707750189460×1043 C
95
H
192
n-pentanonacontane
96 1.04363664561059×1038 1.30243980672744×1044 C
96
H
194
n-hexanonacontane
97 2.86312976836850×1038 4.17205571326637×1044 C
97
H
196
n-heptanonacontane
98 7.85684759853088×1038 1.33677207115080×1045 C
98
H
198
n-octanonacontane
99 2.15659631984508×1039 4.28427290059784×1045 C
99
H
200
n-nonanonacontane
100 5.92107203812581×1039 1.37343190918329×1047 C
100
H
202
n-hectane
101 1.62607500143337×1040 C
101
H
204
n-henihectane
102 4.46670631687268×1040 C
102
H
206
n-dohectane
103 1.22726610195426×1041 C
103
H
208
n-trihectane
104 3.37281538963752×1041 C
104
H
210
n-tetrahectane
105 9.27143441542280×1041 C
105
H
212
n-pentahectane
106 2.54917652030591×1042 C
106
H
214
n-hexahectane
107 7.01051065630088×1042 C
107
H
216
n-heptahectane
108 1.92838773361102×1043 C
108
H
218
n-octahectane
109 5.30557278101059×1043 C
109
H
220
n-nonahectane
110 1.46002972524313×1044 C
110
H
222
n-decahectane
111 4.01865724190509×1044 C
111
H
224
n-undecahectane
112 1.10633962543222×1045 C
112
H
226
n-dodecahectane
113 3.04636987596851×1045 C
113
H
228
n-tridecahectane
114 8.38999942017075×1045 C
114
H
230
n-tetradecahectane
115 2.31113265930118×1046 C
115
H
232
n-pentadecahectane
116 6.36751554673601×1046 C
116
H
234
n-hexadecahectane
117 1.75467195960063×1047 C
117
H
236
n-heptadecahectane
118 4.83616671898832×1047 C
118
H
238
n-octadecahectane
119 1.33316731232142×1048 C
119
H
240
n-nonadecahectane
120 3.67574018395043×1048 C
120
H
242
n-icosahectane

References