COUNTING IN ORGANIC COMPOUNDS

 

 

COUNTING IN ORGANIC COMPOUNDS

            The counting in organic compounds shows the number of carbon atoms present in a compound. The name of every organic compound depends upon this counting (number of carbon atoms). Due to this counting compounds has the same initial name in a different situation( different functional groups),  and has a different terminal names.

 

Name / prefix	No of carbon atom
Meth	1
Eth	2
prop	3
But	4
Pent	5
Hex	6
Hept	7
Oct	8
None	9
Dec	10
Undec	11
Dodec	12
Tridec	13
Tetradec	14
Pentadec	15
Hexadec	16
Heptadec	17
Octadec	18
Nonadec	19
Icos	20
Henicos	21
Docos	22
Tricose	23
Tetracose	24
Pentacose	25
Hexacose	26
Heptacose	27
Octacose	28
Nonacose	29
triacontane	30
Hentriacontane	31
Dotriacontane	32
Tritriacontane	33
Tetratriacontane	34
Pentatriacontane	35
Hexatriacontane	36
Heptatriacontane	37
Octatriacontane	38
Nonatriacontane	39
Tetracontane	40
Hentetracontane	41
Dotetracontane	42
Tritetracontane	43
Tetratetracontane	44
Pentatetracontane	45
Hexatetracontane	46
Heptatetracontane	47
Octatetracontane	48
Nonatetracontane	49
pentacontane	50
Henpentacontane	51
Dopentacontane	52
Tripentacontane	53
Tetrapentacontane	54
Pentapentacontane	55
Hexapentacontane	56
Heptapentacontane	57
Octapentacontane	58
Nonapentacontane	59
hexacontane	60
Henhexacontane	61
Dohexacontane	62
Trihexacontane	63
Tetrahexacontane	64
Pentahexacontane	65
Hexahexacontane	66
Heptahexacontane	67
Octahexacontane	68
Nonahexacontane	69
heptacontane	70
Henheptacontane	71
Doheptacontane	72
Triheptacontane	73
Tetraheptacontane	74
Pentaheptacontane	75
Hexaheptacontane	76
Heptaheptacontane	77
Oct heptacontane	78
Nonaheptacontane	79
octacontane	80
Henoctacontane	81
Dooctacontane	82
Trioctacontane	83
Tetraoctacontane	84
Pentaoctacontane	85
Hexaoctacontane	86
Heptaoctacontane	87
Octaoctacontane	88
Nonaoctacontane	89
Nonacontane	90
Hennonacontane	91
Dononacontane	92
Trinonacontane	93
Tetranonacontane	94
Pentanonacontane	95
Hexanonacontane	96
Heptanonacontane	97
Octanonacontane	98
Nonanonacontane	99
Hectane		100

           

Parent names of functional group/ suffix

Alkane      -ane

Alkene      -ene

Alkyne       -yne

Alcohol    -ol

Alkyl halide   haloalkane

Aldehyde     -al

Ketone       -one

Carboxylic acid   -oic acid