Phthalides

Phthalide

Names
IUPAC name 2-Benzofuran-1(3H)-one
Other names Phthalolactone
Identifiers
CAS Number	87-41-2 Y
3D model (Jmol)	Interactive image
ChEBI	CHEBI:38085
ChemSpider	6621
ECHA InfoCard	100.001.586
PubChem CID	6885
UNII	8VV922U86J
InChI InChI=1S/C8H6O2/c9-8-7-4-2-1-3-6(7)5-10-8/h1-4H,5H2 Key: WNZQDUSMALZDQF-UHFFFAOYSA-N InChI=1/C8H6O2/c9-8-7-4-2-1-3-6(7)5-10-8/h1-4H,5H2 Key: WNZQDUSMALZDQF-UHFFFAOYAW
SMILES O=C1OCc2ccccc12
Properties
Chemical formula	C8H6O2
Molar mass	134.13 g·mol−1
Melting point	75 to 77 °C (167 to 171 °F; 348 to 350 K)
Boiling point	290 °C (554 °F; 563 K)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Phthalide is an organic chemical compound with the molecular formula C₈H₆O₂. It is a lactone that serves as the core chemical structure for a variety of more complex chemical compounds including dyes (such as phenolphthalein), fungicides (such as tetrachlorophthalide, often referred to simply as "phthalide") and natural oils (such as butylphthalide).

Phenolphthalein

Tetrachlorophthalide

Butylphthalide