287-54-7

 Copper,[methanedithiolato(2-)-kS,kS']- (9CI)

CH₂CuS₂

287-55-8

 1,3-Disilacyclobutane

C₂H₈Si₂

287-56-9

 Tetragermetane (9CI)

Ge₄H₈

287-64-9

 Tetraphosphetane(8CI,9CI)

H₄P₄

287-65-0

 1,3,2,4-Dithiadiphosphetane(8CI,9CI)

H₂P₂S₂

287-66-1

 1,3-Diphospha-2,4-disilacyclobutane(8CI,9CI)

H₆P₂Si₂

287-68-3

 1,3-diselena-2$l^{2},4$l^{2}-disilacyclobutane 

Se₂Si₂

287-69-4

 Cyclotetrasilane

H₈Si₄

287-72-9

 Aluminum,[1-propen-1-olato(3-)-kC3,kO1]- (9CI)

C₃H₃AlO

287-74-1

 Aluminum,[1,2-ethenediolato(2-)-kO,kO']hydro- (9CI)

C₂H₃AlO₂

287-75-2

 Aluminum,hydro[2-(mercapto-kS)ethenolato(2-)-kO]- (9CI)

C₂H₃AlOS

287-77-4

 Arsole

C₄H₅As

287-81-0

 Gold,1,3-butadiene-1,4-diylhydro- (9CI)

C₄H₅Au

287-82-1

 Gold,[1,2-ethenedithiolato(2-)-kS,kS']hydro- (9CI)

C₂H₃AuS₂