3,4-bis(methylselanyl)cyclobut-3-ene-1,2-dione;3,4-bis(methylseleno)cyclobut-3-ene-1,2-dione;3,4-bis(methylseleno)cyclobut-3-ene-1,2-quinone;62782-96-1;3-Cyclobutene-1,2-dione, 3,4-bis(methylseleno-
3,4-bis(methylselanyl)cyclobut-3-ene-1,2-dione