Banyaknya atom C

Jumlah isomer Rumus kimia Nama Rantai Lurus

1 1 CH4 Metana

2 1 C2H6 Etana

3 1 C3H8 Propana

4 2 C4H10 n-Butana

5 3 C5H12 n-Pentana

6 5 C6H14 n-Heksana

7 9 C7H16 n-Heptana

8 18 C8H18 n-Oktana

9 35 C9H20 n-Nonana

10 75 C10H22 n-Dekana

11 159 C11H24 n-Undekana

12 355 C12H26 n-Dodekana

13 802 C13H28 n-Tridekana

14 1,858 C14H30 n-Tetradekana

15 4,347 C15H32 n-Pentadekana

16 10,359 C16H34 n-Heksadekana

17 24,894 C17H36 n-Heptadekana

18 60,523 C18H38 n-Oktadekana

19 148,284 C19H40 n-Nonadekana

20 366,319 C20H42 n-Ikosana

21 910,726 C21H44 n-Henikosana

22 2,278,638 C22H46 n-Dokosana

23 5,731,580 C23H48 n-Trikosane

Banyaknya atom C

Jumlah isomer Rumus kimia Nama Rantai Lurus

24 14,490,245 C24H50 n-Tetrakosana

25 36,797,588 C25H52 n-Pentakosana

26 93,839,412 C26H54 n-Heksakosana

27 240,215,803 C27H56 n-Heptakosana

28 617,105,614 C28H58 n-Oktakosana

29 1,590,507,121 C29H60 n-Nonakosana

30 4,111,846,763 C30H62 n-Triakontana

31 10,660,307,791 C31H64 n-Hentriakontana

32 27,711,253,769 C32H66 n-Dotriakontana

33 72,214,088,660 C33H68 n-Tritriakontana

34 188,626,236,139 C34H70 n-Tetratriakontana

35 493,782,952,902 C35H72 n-Pentatriakontana

36 1,295,297,588,128 C36H74 n-Heksatriakontana

37 3,404,490,780,161 C37H76 n-Heptatriakontana

38 8,964,747,474,595 C38H78 n-Octatriakontana

39 23,647,478,933,969 C39H80n-Nonatriakontana

40 62,481,801,147,341 C40H82 n-Tetrakontana

41 165,351,455,535,782 C41H84 n-Hentetrakontana

42 438,242,894,769,226 C42H86 n-Dotetrakontana

43 1,163,169,707,886,427 C43H88 n-Tritetrakontana

44 3,091,461,011,836,856 C44H90 n-Tetratetrakontana

45 8,227,162,372,221,203 C45H92 n-Pentatetrakontana

Banyaknya atom C

Jumlah isomer Rumus kimia Nama Rantai Lurus

46 21,921,834,086,683,418 C46H94 n-Heksatetrakontana

47 58,481,806,621,987,010 C47H96 n-Heptatetrakontana

48 156,192,366,474,590,639 C48H98 n-Oktatetrakontana

49 417,612,400,765,382,272 C49H100 n-Nonatetrakontana

50 1,117,743,651,746,953,270 C50H102 n-Pentakontana

51 2,99466×1018 C51H104 n-Henpentakontana

52 8,03108×1018 C52H106 n-Dopentakontana

53 2,15578×1019 C53H108 n-Tripentakontana

54 5,79192×1019 C54H110 n-Tetrapentakontana

55 1,55745×1020 C55H112 n-Pentapentakontana

56 4,1915×1020 C56H114 n-Heksapentakontana

57 1,12894×1021 C57H116 n-Heptapentakontana

58 3,04304×1021 C58H118 n-Oktapentakontana

59 8,20862×1021 C59H120 n-Nonapentakontana

60 2,21587×1022 C60H122 n-Hexakontana

61 5,98581×1022 C61H124 n-Henheksakontana

62 1,61806×1023 C62H126 n-Doheksakontana

63 4,37672×1023 C63H128 n-Triheksakontana

64 1,18462×1024 C64H130 n-Tetraheksakontana

65 3,20829×1024 C65H132 n-Pentaheksakontana

66 8,69413×1024 C66H134 n-Heksaheksakontana

67 2,35738×1025 C67H136 n-Heptaheksakontana

68 6,39552×1025 C68H138 n-Oktaheksakontana

Banyaknya atom C

Jumlah isomer Rumus kimia Nama Rantai Lurus

69 1,73603×1026 C69H140 n-Nonaheksakontana

70 4,71485×1026 C70H142 n-Heptakontana

71 1,28115×1027 C71H144 n-Henheptakontana

72 3,48297×1027 C72H146 n-Doheptakontana

73 9,47345×1027 C73H148 n-Triheptakontana

74 2,57793×1028 C74H150 n-Tetraheptakontana

75 7,01832×1028 C75H152 n-Pentaheptakontana

76 1,91156×1029 C76H154 n-Hexaheptakontana

77 5,20874×1029 C77H156 n-Heptaheptakontana

78 1,41991×1030 C78H158 n-Oktaheptakontana

79 3,87228×1030 C79H160 n-Nonaheptakontana

80 1,05645×1031 C80H162 n-Oktakontana

81 2,88336×1031 C81H164 n-Henoktakontana

82 7,87256×1031 C82H166 n-Dooktakontana

83 2,15028×1032 C83H168 n-Trioktakontana

84 5,87532×1032 C84H170 n-Tetraoktakontana

85 1,60591×1033 C85H172 n-Pentaoktakontana

86 4,39100×1033 C86H174 n-Heksaoktakontana

87 1,20103×1034 C87H176 n-Heptaoktakontana

88 3,28613×1034 C88H178 n-Oktaoktakontana

89 8,99410×1034 C89H180 n-Nonaoktakontana

90 2,46245×1035 C90H182 n-Nonakontana

91 6,74392×1035 C91H184 n-Hennonakontana

Banyaknya atom C

Jumlah isomer Rumus kimia Nama Rantai Lurus

92 1,84752×1036 C92H186 n-Dononakontana

93 5,06282×1036 C93H188 n-Trinonakontana

94 1,38779×1037 C94H190 n-Tetranonakontana

95 3,80518×1037 C95H192 n-Pentanonakontana

96 1,04364×1038 C96H194 n-Heksanonakontana

97 2,86313×1038 C97H196 n-Heptanonakontana

98 7,85685×1038 C98H198 n-Octanonakontana

99 2,15660×1039 C99H200 n-Nonanonakontana

100 5,92107×1039 C100H202 n-Hektana

Nama – nama Alkana 100 atom karbon

Jumlah isomer dari C6H14 dan C7H16.

a. C6H14 (Heksana) berikut jumlah isomernya : 

isomer rantai lurus. CH3-CH2-CH2-CH2-CH2-CH3 = n-heksana 

mengurangi rantai induknya dengan satu atom karbon dan jadikan cabang. CH3-CH-CH2-CH2-CH3 = 2-metil-pentana CH3 

CH3-CH2-CH-CH2-CH3 = 3-metil-pentana CH3 

mengurangi lagi rantai induknya, menjadi dua atom karbon dijadikan cabang. CH3 CH3-C-CH2-CH3 = 2,2-dimetil-butana CH3 

CH3 CH3-CH-CH-CH3 = 2,3-dimetil-butana CH3 jadi, untuk alkana dengan rumus molekul C6H14 (Heksana) ada 5 kemungkinan isomer.

b. C7H16

CH3-CH2-CH2-CH2-CH2-CH2-CH3 heptana 

(CH3)2-CH-CH2-CH2-CH2-CH3 2 - metil heksana

CH3-CH2-CH(CH3)-CH2-CH2-CH3 3 - metil heksana 

(CH3-CH2)2-CH-CH2-CH3 3 - etil pentana 

(CH3)3-C-CH2-CH2-CH3 2,2 - dimetil pentana 

(CH3)2-CH-CH(CH3)-CH2-CH3 2,3 - dimetil pentana 

(CH3)2-CH-CH2-CH(CH3)2 2,4 - dimetil pentana 

(CH3-CH2)2-C(CH3)2 3,3 – dimetil pentana 

(CH3)3-C-CH(CH3)2 2,2,3 – trimeti lbutana

jadi, untuk alkana dengan rumus molekul C7H16 ada 9 kemungkinan isomer.