IUPAC Naming Calculator

Generate Systematic Names for Chemical Compounds

ChemistryCalculatorHub.info

Alkane Naming Calculator

Generate IUPAC names for straight and branched alkanes

Results will appear here

Functional Group Priority Calculator

Determine priority of functional groups for naming

Results will appear here

Nomenclature Analysis Tool

Analyze chemical names and verify IUPAC compliance

Results will appear here

Understanding IUPAC Nomenclature

Basic Principles

IUPAC nomenclature follows these key principles:

  • Longest carbon chain
  • Lowest numbering
  • Alphabetical order
  • Priority rules

Functional Groups

Priority order (highest to lowest):

  • Carboxylic acids (-COOH)
  • Esters (-COOR)
  • Amides (-CONH₂)
  • Nitriles (-CN)
  • Aldehydes (-CHO)

Substituents

Common substituents:

  • Alkyl groups (-R)
  • Halogens (-F, -Cl, -Br, -I)
  • Hydroxy (-OH)
  • Amino (-NH₂)

Numbering Rules

Key considerations:

  • Start from principal group
  • Minimize position numbers
  • Consider multiplicity
  • Follow alphabetical order

Special Cases

Important exceptions:

  • Cyclic compounds
  • Multiple bonds
  • Complex substituents
  • Stereochemistry

Essential IUPAC Naming Rules

Alkane Prefixes

meth-, eth-, prop-, but-, pent-

Functional Suffixes

-oic acid, -al, -one, -ol, -amine

Multiplicity Prefixes

di-, tri-, tetra-, penta-, hexa-