Benzocyclobutene

Benzocyclobutene

Names
Preferred IUPAC name Bicyclo[4.2.0]octa-1,3,5-triene
Other names Benzocyclobutane BCB Benzocyclobutene (not in accordance with IUPAC nomenclature)
Identifiers
CAS Number	694-87-1 Y
3D model (JSmol)	Interactive image
ChEBI	CHEBI:87328 N
ChemSpider	62868 N
ECHA InfoCard	100.161.355
PubChem CID	69667
UNII	MF7U8F3YLB Y
CompTox Dashboard (EPA)	DTXSID3073927
InChI InChI=1S/C8H8/c1-2-4-8-6-5-7(8)3-1/h1-4H,5-6H2 N Key: UMIVXZPTRXBADB-UHFFFAOYSA-N N InChI=1/C8H8/c1-2-4-8-6-5-7(8)3-1/h1-4H,5-6H2 Key: UMIVXZPTRXBADB-UHFFFAOYAR
SMILES C12=CC=CC=C1CC2
Properties
Chemical formula	C8H8
Molar mass	104.152 g·mol−1
Density	0.957 g/cm3
Boiling point	150 °C (302 °F; 423 K)
Refractive index (nD)	1.541
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). N verify (what is YN ?) Infobox references

Benzocyclobutene (BCB) is a benzene ring fused to a cyclobutane ring. It has chemical formula C₈H₈.^[1]

BCB is frequently used to create photosensitive polymers. BCB-based polymer dielectrics may be spun on or applied to various substrates for use in Micro Electro-Mechanical Systems (MEMS) and microelectronics processing. Applications include wafer bonding, optical interconnects, low-κ dielectrics, or even intracortical neural implants.