10 Questions
Where are the Recommendations published?
In the IUPAC journal, Pure and Applied Chemistry (PAC)
How long does it take for the Recommendations to appear in the IUPAC Standards Online database?
One year after publication in PAC
Where can information on chemical nomenclature and terminology be accessed?
Through the IUPAC Color Books
Which suffix is used to name the substituents formed by the removal of one hydrogen from the end of a straight chain saturated hydrocarbon?
-yl
How are the numbers and letters separated in the name of a compound according to the IUPAC rules?
Commas are used between numbers and dashes are used between letters and numbers.
Can IUPAC nomenclature name all organic compounds?
No, it cannot name all organic compounds due to the immense number of possible structures.
Which organization is the universally-recognized authority on chemical nomenclature and terminology?
IUPAC
What is the name of the compound with the IUPAC name N-(2-[(5-[(dimethylamino)methyl]furan-2-yl)methylthio]ethyl)-N'-methyl-2-nitroethene-1,1-diamine?
Zantac
What is the general notation for an aryl group (any aromatic ring)?
Ar-
How are the relative locations of substituents on a benzene ring designated in the case of disubstituted benzenes?
ortho, meta, para
Study Notes
IUPAC Recommendations
- IUPAC Recommendations are published in the IUPAC Standards Online database.
- The Recommendations appear in the IUPAC Standards Online database within 6-12 months after approval.
Chemical Nomenclature and Terminology
- Information on chemical nomenclature and terminology can be accessed through the IUPAC website and the IUPAC Standards Online database.
IUPAC Nomenclature
- The suffix "-yl" is used to name the substituents formed by the removal of one hydrogen from the end of a straight chain saturated hydrocarbon.
- According to the IUPAC rules, numbers and letters are separated by a hyphen in the name of a compound.
- IUPAC nomenclature can be used to name most organic compounds, but not all.
Authority on Chemical Nomenclature
- IUPAC (International Union of Pure and Applied Chemistry) is the universally-recognized authority on chemical nomenclature and terminology.
Compound Nomenclature
- The compound with the IUPAC name N-(2-[(5-[(dimethylamino)methyl]furan-2-yl)methylthio]ethyl)-N'-methyl-2-nitroethene-1,1-diamine has a complex name due to its structure.
- The general notation for an aryl group (any aromatic ring) is Ar.
Benzene Ring Substituents
- In the case of disubstituted benzenes, the relative locations of substituents on a benzene ring are designated using ortho- (1,2-), meta- (1,3-), and para- (1,4-) prefixes.
Test your knowledge of IUPAC naming rules for alkanes and substituents in this quiz. Learn about the correct nomenclature for straight chain saturated hydrocarbons and common branched substituents.
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