System to describe the chemical formulas for WEB.

Diketene

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Diketene

Molecular formula: C4H4O2 CAS# 674-82-8
Categories: Lactone
Names
English:
1-Butene-1,3-dione(IUPAC)(CAS)
2-Oxetanone, 4-methylene-(CAS)
4-Methylene-2-oxetanone(IUPAC)
4-Methyleneoxetan-2-one
4-Methylidenoxetan-2-on
4-methylideneoxetan-2-one(IUPAC)
Diketene [Wiki]
EINECS:211-617-1
Ketene dimer
γ-methylenepropiolactone

Variants of the formula:

$slope(45)O=/\<=>`/O`\$slope()
$slope(45)`|-/O`/|O`-`//
Elemental composition
Can't show the diagram.
Symbol Element Atomic weight Number of atoms Mass percent