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Chemical nomenclature, replete as it is with compounds with very complex names, is a repository for some names that may be considered unusual. A browse through the Physical Constants of Organic Compounds in the CRC Handbook of Chemistry and Physics (a fundamental resource) will reveal not just the whimsical work of chemists, but the sometimes peculiar compound names that occur as the ...
It is the longest word in the English language published in a popular dictionary, Oxford Dictionaries, which defines it as "an artificial long word said to mean a lung disease caused by inhaling very fine ash and sand dust". [3]
With its length of ~27,000 to ~35,000 amino acids (depending on the splice isoform), titin is the largest known protein. [14] Furthermore, the gene for titin contains the largest number of exons (363) discovered in any single gene, [15] as well as the longest single exon (17,106 bp).
Parts-per-million cube of relative abundance by mass of elements in an average adult human body down to 1 ppm. About 99% of the mass of the human body is made up of six elements: oxygen, carbon, hydrogen, nitrogen, calcium, and phosphorus. Only about 0.85% is composed of another five elements: potassium, sulfur, sodium, chlorine, and magnesium ...
The following is a table of drugs organized by their year of discovery. Naturally occurring chemicals in plants, including alkaloids, have been used since pre-history.In the modern era, plant-based drugs have been isolated, purified and synthesised anew.
This is an index of lists of molecules (i.e. by year, number of atoms, etc.). Millions of molecules have existed in the universe since before the formation of Earth. Three of them, carbon dioxide, water and oxygen were necessary for the growth of life.
PG5 has a molecular mass of about 200 MDa or 200,000,000,000,000,000 g/mol. It has roughly 200 million atoms and a diameter of roughly 10 nm. Its length is up to a few micrometers. [3]
The longest recognized systematic name is for the protein titin, at 189,819 letters. [1] While lexicographers regard generic names of chemical compounds as verbal formulae rather than words, [2] for its sheer length the systematic name for titin is often included in longest-word lists.