IUBMB Nomenclature Home Page

INTERNATIONAL UNION OF BIOCHEMISTRY AND MOLECULAR BIOLOGY

Recommendations on Biochemical & Organic Nomenclature, Symbols & Terminology etc.
click here https://iubmb.qmul.ac.uk/
World Wide Web material prepared by G. P. Moss
School of Physical and Chemical Sciences, Queen Mary, University of London,
Mile End Road, London, E1 4NS, UK
g.p.moss@qmul.ac.uk
To search the database click here .
What's Here and What's New Home page for IUBMB
Full text of IUBMB Nomenclature Committee Recommendations
Enzyme Nomenclature EC 1 Oxidoreductases EC 2 Transferases
EC 3 Hydrolases EC 4 Lyases EC 5 Isomerases
EC 6 Ligases EC 7 Translocases Supplements and Proposed New Enzymes
New October 2025
Enzyme Reaction Diagrams Multiple Forms of Enzymes (Isoenzymes) Multienzymes
Nomenclature Nucleic Acid Sequences
(incompletely specified bases)		 Junctions and Branchpoints in Nucleic Acids Enzymes Kinetics
Membrane Transport Proteins Electron Transport Proteins Nomenclature Peptide Hormone Nomenclature
myo-Inositol Biochemical Thermodynamics
revised version		 Translation factors
Full text of IUPAC IUBMB Joint Commission on Biochemical Nomenclature recommendations
Polymerised Amino Acids Nomenclature Nucleic Acid & Constituents Abbreviations and Symbols Carbohydrate Nomenclature
Nomenclature of Amino Acids and Peptides Conformations of Polynucleotide Chains Conformation of Polysaccharide Chains
Conformation of Polypeptide Chains Glycolipid Nomenclature Cyclitol Nomenclature
Glycopeptide, Glycoprotein & Peptidoglycan Nomenclature Lipid Nomenclature Carotenoid Nomenclature
Steroid Nomenclature Prenol Nomenclature
Terpenoid precursors 		Retinoid Nomenclature (Vitamin A)
Vitamin D Nomenclature Corrinoid Nomenclature
(Vitamin B-12) 		Tocopherol Nomenclature
(Vitamin E)
Vitamin B-6 Nomenclature
(Pyridoxal) 		Tetrapyrrole Nomenclature Lignan Nomenclature
Folic Acid Nomenclature Biochemical Phosphorus Compounds Newsletter (1996 – 2023)
Nomenclature of Quinones with Isoprenoid Chains Flavonoid Nomenclature New Watch this space !
Bibliographic Data on Biochemical and other Nomenclature Recommendations
IUPAC-IUBMB Biochemical Nomenclature "Biochemical Nomenclature and Related Documents" 1992 IUPAC Nomenclature of Organic Chemistry 2013 New
Glossary of Organic Class Names Basic Terminology of Stereochemistry Glossary of Medicinal Chemistry Terms
Bioinorganic glossary Gold Book - chemical glossary Isotopic modification
Natural product nomenclature Physical organic chemistry glossary IUPAC Atomic Weights (2021 table) New values
Full Text of Other IUPAC Nomenclature Recommendations Map of Usage Statistics (to January 2013) Provisional IUPAC nomenclature recommendations
Most entries in the above table are hypertext linked to the full details. If these links are not active please consult the non-table form.
Last update 20 October 2025.

Change to IUPAC Nomenclature Home Page for chemical nomenclature.