Benzothiophene

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Benzothiophene
IUPAC name	benzo[b]thiophene
Other names	benzothiophene thianaphthene benzothiofuran
Identifiers
CAS number	[95-15-8]
SMILES	S1C=CC2=CC=CC=C12
Properties
Molecular formula	C8H6S
Molar mass	134.20 g/mol
Appearance	white solid
Density	? g/cm3, ?
Melting point	32 °C (? K)
Boiling point	221 °C (? K)
Related compounds
Related compounds	thiophene indole benzofuran
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox disclaimer and references

Benzothiophene is an aromatic organic compound with a molecular formula C₈H₆S and an odor similar to naphthalene (mothballs). It occurs naturally as a constituent of petroleum-related deposits such as lignite tar. Benzothiophene has no household use. It is used primarily in industry and research.

Being a heterocyclic compound, benzothiophene finds use in research as a starting material for the synthesis of larger, usually bioactive structures. It is found within the chemical structures of pharmaceutical drugs such as raloxifene, zileuton, and sertaconazole. It is also used in the manufacturing of dyes such as thioindigo.

Its aromaticity makes it relatively stable, although as a heterocycle, it has reactive sites which allow for functionalization.

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