Nomen Calture -IUPAC-part 1

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International Union of Pure and Applied Chemistry

it consists of three parts

prefix - infix - suffix

prefix
gives the number of c atoms in the parent chain

1 meth
2 eth
3 prop
4 but
5 pent
6 hex
7 hept
8 oct
9 non
10 dec
11 undec
12 dodec
13 tridec
14 tetrodec
15 pentadec
16 hexadec
17 heptadec
18 octadec
19 nonadec
20 eicos

infix
givs the nature of c-c bond in the parent chain
c-c single bond an
c--c double bond en
c---c triple bond yn

suffix
givs the family or the class of the compound
hydrocarbon e
alcohol ol
aldehyde al
ketone one
carboxylic acid oic acid

ex

CH3-CH3

2C atom prefix is Eth
single bond infix is an
Hydrocarbon suffix is e

the IUPAC name is Ethane

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