Polydiacetylene

CAS:27987-87-7

Formula:C4H2

1-Buten-3-yne-1,4-diyl

CAS:647842-73-7

Formula:C4H2

Diacetylene

CAS:460-12-8

Formula:C4H2

1,2,3-Butatrienylidene

CAS:70571-89-0

Formula:C4H2

1-Buten-3-ynylidene

CAS:70571-90-3

Formula:C4H2

1-Cyclobuten-3-yne

CAS:114251-99-9

Formula:C4H2

1,3-Cyclobutadiene-1,3-diyl

CAS:114252-00-5

Formula:C4H2

Methylene, 2-cyclopropen-1-ylidene-

CAS:74458-51-8

Formula:C4H2