Xanthene
IUPAC name	9H-Xanthene
Other names	Dibenzo[a,e]pyran 10H-9-oxaanthracene
Identifiers
CAS number	92-83-1 Y
EC number	202-194-4
SMILES	c1(Oc2ccccc2C3)c3cccc1
Properties
Molecular formula	C13H10O
Molar mass	182.22 g/mol
Appearance	Yellow solid
Melting point	101-102 °C
Boiling point	310-312 °C
Hazards
R-phrases	R42 R43
S-phrases	S22 S36 S37 S45
Y (what is this?)  (verify) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

Xanthene (9H-xanthene, 10H-9-oxaanthracene) is a yellow organic heterocyclic compound. Its chemical formula is C₁₃H₁₀O. It is soluble in ether. Its melting point is 101-102 °C and its boiling point is 310-312 °C. Xanthene is used as a fungicide and it is also a useful intermediate in organic synthesis.

Derivatives of xanthene are commonly referred to collectively as xanthenes, and among other uses are the basis of a class of dyes which includes fluorescein, eosins, and rhodamines. Xanthene dyes tend to be fluorescent, yellow to pink to bluish red, brilliant dyes. Many xanthene dyes can be prepared by condensation of derivates of phthalic anhydride with derivates of resorcinol or 3-aminophenol.

[edit] See also

• Xanthone
• Xanthine
• Xanthydrol

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