List of straight - chain alkanes - wikipedia List of straight - chain alkanes The following is a list of straight - chain and branched alkanes 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 CH methane methyl hydride ; natural gas ethane dimethyl ; ethyl hydride ; methyl methane propane dimethyl methane ; propyl hydride n - butane butyl hydride ; methylethyl methane 5 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 7003241200000000000 ♠ 2412 n - tridecane 14 7003185800000000000 ♠ 1858 7003656300000000000 ♠ 6563 n - tetradecane 15 7003434700000000000 ♠ 4347 7004181270000000000 ♠ 18 127 n - pentadecane 16 7004103590000000000 ♠ 10 359 7004506990000000000 ♠ 50 699 n - hexadecane cetane 17 7004248940000000000 ♠ 24 894 7005143255000000000 ♠ 143 255 n - heptadecane 18 7004605230000000000 ♠ 60 523 7005408429000000000 ♠ 408 429 n - octadecane 19 7005148284000000000 ♠ 148 284 7006117377000000000 ♠ 1173770 n - nonadecane 20 7005366319000000000 ♠ 366 319 7006339684400000000 ♠ 3396844 n - icosane didecyl icosane 21 7005910726000000000 ♠ 910 726 7006989165000000000 ♠ 9891650 n - henicosane henicosane 22 7006227863800000000 ♠ 2278638 7007289720800000000 ♠ 28 972 080 n - docosane 23 7006573158000000000 ♠ 5731580 7007852893900000000 ♠ 85 289 390 n - tricosane 24 7007144902450000000 ♠ 14 490 245 7008252260276000000 ♠ 252 260 276 n - tetracosane tetrakosane 25 7007367975880000000 ♠ 36 797 588 7008749329719000000 ♠ 749 329 719 n - pentacosane paraffin wax 26 7007938394120000000 ♠ 93 839 412 7009223469503000000 ♠ 2234695030 n - hexacosane cerane ; hexeikosane 27 7008240215803000000 ♠ 240 215 803 7009668889360300000 ♠ 6688893603 n - heptacosane 28 7008617105614000000 ♠ 617 105 614 7010200892965540000 ♠ 20 089 296 554 n - octacosane 29 7009159050712100000 ♠ 1590507121 7010605265434800000 ♠ 60 526 543 480 n - nonacosane 30 7009411184676300000 ♠ 4111846763 7011182896187256000 ♠ 182 896 187 256 n - triacontane 31 7010106603077910000 ♠ 10 660 307 791 7011554188210352000 ♠ 554 188 210 352 n - hentriacontane untriacontane 32 7010277112537690000 ♠ 27 711 253 769 7012168355760721100 ♠ 1683557607211 n - dotriacontane dicetyl 33 7010722140886600000 ♠ 72 214 088 660 7012512681937135600 ♠ 5126819371356 n - tritriacontane 34 7011188626236139000 ♠ 188 626 236 139 7013156478553170800 ♠ 15 647 855 317 080 n - tetratriacontane 35 7011493782952902000 ♠ 493 782 952 902 7013478620491874470 ♠ 47 862 049 187 447 n - pentatriacontane 36 7012129529758812800 ♠ 1295297588128 7014146691564302648 ♠ 146 691 564 302 648 n - hexatriacontane 37 7012340449078016100 ♠ 3404490780161 7014450451875783866 ♠ 450 451 875 783 866 n - heptatriacontane 38 7012896474747459500 ♠ 8964747474595 7015138572461528594 ♠ 1385724615285949 n - octatriacontane 39 7013236474789339690 ♠ 23 647 478 933 969 7015427021791587840 ♠ 4270217915878409 n - nonatriacontane 40 7013624818011473410 ♠ 62 481 801 147 341 7016131804461893261 ♠ 13 180 446 189 326 135 n - tetracontane 41 7014165351455535782 ♠ 165 351 455 535 782 7016407457513564218 ♠ 40 745 751 356 421 890 n - hentetracontane 42 7014438242894769226 ♠ 438 242 894 769 226 7017126146261761339 ♠ 126 146 261 761 339 138 n - dotetracontane 43 7015116316970788642 ♠ 1163169707886427 7017391089580997271 ♠ 391 089 580 997 271 932 n - tritetracontane 44 7015309146101183685 ♠ 3091461011836856 7018121411535755005 ♠ 1214115357550059889 n - tetratetracontane 45 7015822716237222120 ♠ 8227162372221203 7018377397853359443 ♠ 3773978533594435261 n - pentatetracontane 46 7016219218340866834 ♠ 21 921 834 086 683 418 7019117454670000000 ♠ 1.174 5467 × 10 n - hexatetracontane 47 7016584818066219870 ♠ 58 481 806 621 987 010 7019365973630000000 ♠ 3.659 7363 × 10 n - heptatetracontane 48 7017156192366474590 ♠ 156 192 366 474 590 639 7020114160680000000 ♠ 1.141 6068 × 10 n - octatetracontane 49 7017417612400765382 ♠ 417 612 400 765 382 272 7020356492610000000 ♠ 3.564 9261 × 10 n - nonatetracontane 50 7018111774365174695 ♠ 1117743651746953270 7021111437889999999 ♠ 1.114 3789 × 10 n - pentacontane 51 7018299466000000000 ♠ 2.994 66 × 10 n - henpentacontane 52 7018803107999999999 ♠ 8.031 08 × 10 n - dopentacontane 53 7019215578000000000 ♠ 2.155 78 × 10 n - tripentacontane 54 7019579192000000000 ♠ 5.791 92 × 10 n - tetrapentacontane 55 7020155745000000000 ♠ 1.557 45 × 10 n - pentapentacontane 56 7020419149999999999 ♠ 4.1915 × 10 n - hexapentacontane 57 7021112894000000000 ♠ 1.128 94 × 10 n - heptapentacontane 58 7021304304000000000 ♠ 3.043 04 × 10 n - octapentacontane 59 7021820862000000000 ♠ 8.208 62 × 10 n - nonapentacontane 60 7022221586999999999 ♠ 2.215 87 × 10 n - hexacontane 61 7022598581000000000 ♠ 5.985 81 × 10 n - henhexacontane 62 7023161806000000000 ♠ 1.618 06 × 10 n - dohexacontane 63 7023437671999999999 ♠ 4.376 72 × 10 n - trihexacontane 64 7024118462000000000 ♠ 1.184 62 × 10 n - tetrahexacontane 65 7024320829000000000 ♠ 3.208 29 × 10 n - pentahexacontane 66 7024869413000000000 ♠ 8.694 13 × 10 n - hexahexacontane 67 7025235738000000000 ♠ 2.357 38 × 10 n - heptahexacontane 68 7025639552000000000 ♠ 6.395 52 × 10 n - octahexacontane 69 7026173603000000000 ♠ 1.736 03 × 10 n - nonahexacontane 70 7026471485000000000 ♠ 4.714 85 × 10 n - heptacontane 71 7027128115000000000 ♠ 1.281 15 × 10 n - henheptacontane 72 7027348297000000000 ♠ 3.482 97 × 10 n - doheptacontane 73 7027947345000000000 ♠ 9.473 45 × 10 n - triheptacontane 74 7028257793000000000 ♠ 2.577 93 × 10 n - tetraheptacontane 75 7028701832000000000 ♠ 7.018 32 × 10 n - pentaheptacontane 76 7029191156000000000 ♠ 1.911 56 × 10 n - hexaheptacontane 77 7029520873999999999 ♠ 5.208 74 × 10 n - heptaheptacontane 78 7030141991000000000 ♠ 1.419 91 × 10 n - octaheptacontane 79 7030387228000000000 ♠ 3.872 28 × 10 n - nonaheptacontane 80 7031105645000000000 ♠ 1.056 45 × 10 n - octacontane 81 7031288336000000000 ♠ 2.883 36 × 10 n - henoctacontane 82 7031787256000000000 ♠ 7.872 56 × 10 n - dooctacontane 83 7032215028000000000 ♠ 2.150 28 × 10 n - trioctacontane 84 7032587532000000000 ♠ 5.875 32 × 10 n - tetraoctacontane 85 7033160590999999999 ♠ 1.605 91 × 10 n - pentaoctacontane 86 7033439100000000000 ♠ 4.391 00 × 10 n - hexaoctacontane 87 7034120102999999999 ♠ 1.201 03 × 10 n - heptaoctacontane 88 7034328612999999999 ♠ 3.286 13 × 10 n - octaoctacontane 89 7034899409999999999 ♠ 8.994 10 × 10 n - nonaoctacontane 90 7035246244999999999 ♠ 2.462 45 × 10 n - nonacontane 91 7035674392000000000 ♠ 6.743 92 × 10 n - hennonacontane 92 7036184752000000000 ♠ 1.847 52 × 10 n - dononacontane 93 7036506282000000000 ♠ 5.062 82 × 10 n - trinonacontane 94 7037138778999999999 ♠ 1.387 79 × 10 n - tetranonacontane 95 7037380517999999999 ♠ 3.805 18 × 10 n - pentanonacontane 96 7038104363999999999 ♠ 1.043 64 × 10 n - hexanonacontane 97 7038286312999999999 ♠ 2.863 13 × 10 n - heptanonacontane 98 7038785684999999999 ♠ 7.856 85 × 10 n - octanonacontane 99 7039215660000000000 ♠ 2.156 60 × 10 n - nonanonacontane 100 7039592107000000000 ♠ 5.921 07 × 10 n - hectane 101 7040162608000000000 ♠ 1.626 08 × 10 n - henihectane 102 7040446671000000000 ♠ 4.466 71 × 10 n - dohectane 103 7041122727000000000 ♠ 1.227 27 × 10 n - trihectane 104 7041337282000000000 ♠ 3.372 82 × 10 n - tetrahectane 105 7041927143000000000 ♠ 9.271 43 × 10 n - pentahectane 106 7042254918000000000 ♠ 2.549 18 × 10 n - hexahectane 107 7042701051000000000 ♠ 7.010 51 × 10 n - heptahectane 108 7043192839000000000 ♠ 1.928 39 × 10 n - octahectane 109 7043530557000000000 ♠ 5.305 57 × 10 n - nonahectane 110 7044146003000000000 ♠ 1.460 03 × 10 n - decahectane 111 7044401866000000000 ♠ 4.018 66 × 10 n - undecahectane 112 7045110633960000000 ♠ 1.106 3396 × 10 n - dodecahectane 113 7045304791860000000 ♠ 3.047 9186 × 10 n - tridecahectane 114 7045838999940000000 ♠ 8.389 9994 × 10 n - tetradecahectane 115 7046231229360000000 ♠ 2.312 2936 × 10 n - pentadecahectane 116 7046636751550000000 ♠ 6.367 5155 × 10 n - hexadecahectane 117 7047175553880000000 ♠ 1.755 5388 × 10 n - heptadecahectane 118 7047483616670000000 ♠ 4.836 1667 × 10 n - octadecahectane 119 7048133381829999999 ♠ 1.333 8183 × 10 n - nonadecahectane 120 7048367574020000000 ♠ 3.675 7402 × 10 n - icosahectane... External links Isomer Count A calculator that can determine the number of isomers, stereoisomers, and structurally unfavourable isomers for a particular alkane. Alkanes Methane ( CH ) Ethane ( C ) Propane ( C ) Butane ( C ) Pentane ( C ) Hexane ( C ) Heptane ( C ) Octane ( C ) Nonane ( C ) Decane ( C ) Undecane ( C ) Dodecane ( C ) Tridecane ( C ) Tetradecane ( C ) Pentadecane ( C ) Hexadecane / Cetane ( C ) Heptadecane ( C ) Octadecane ( C ) Nonadecane ( C ) Icosane ( C ) Heneicosane ( C ) Tetracosane ( C ) Nonacosane ( C ) Hentriacontane ( C ) Higher alkanes List of alkanes Retrieved from `` https://en.wikipedia.org/w/index.php?title=List_of_straight-chain_alkanes&oldid=856188930 '' Categories : Alkanes Chemistry - related lists Talk About Wikipedia বাংলা فارسی हिन्दी Bahasa Indonesia Magyar 日本 語 Português Slovenščina Tiếng Việt 中文 3 more Edit links This page was last edited on 23 August 2018, at 13 : 38 ( UTC ). About Wikipedia

Question: how many carbons are in the longest chain
Answer: 120