IUPAC Rules

Question 1

1st rule

Answer 1

Select the longest carbon chain as Main Chain

Question 2

IUPAC consists of

Answer 2

Prefix, word, route, primary, suffix and secondary suffix

Question 3

Yeah, how is the numbering done

Answer 3

Numbering is done from end closer to highest priority, functional group

Question 4

What if acarbon containing functional group is present

Answer 4

Yeah, if carbon containing functional group is present and numbering starts from carbon of functional group irrespective of number of carbon in the longest Chain

Question 5

What is Lowest set of Locant

Answer 5

Inorganic molecule is there or alternate ways of selecting Main chain then it should be done such that the set of locant and should be minimum

Question 6

What do you mean by Locants

Answer 6

They are number representing position of side chain or functional groups

Question 7

What if organic molecule is cyclic

Answer 7

Numbering of carbon cannot run from Cycle carbon to open chain carbon and vice versa
If organic molecule is cyclic prefix cyclo is used

Question 8

If a substitute and functional group appears more than once, then what will be the IUPAC name?

Answer 8

If substitute and functional group appears more than once, then prefix, di ,tri, tetra etc can be use. Note that words Di ,tri ,tetra Are not considered in alphabetical order.