PERFLUORO-2,2,3,3-TETRAMETHYLBUTANE
1-AMino-3-hydroxycyclobutanecarboxylic acid hydrochloride
nonanedioic acid, polymer with 1,3-butanediol, decyloctyl ester
TRIMETHYLSILYL NONAFLUOROBUTANESULFONATE
1,4-Diacetoxybutane
2-(AMinoMethylene)-1-phenylbutane-1,3-dione
Hexanedioic acid, polymer with 1,3-butanediol, hexadecanoate
Butanenitrile,2-hydroxy-, (R)-
3-Pyrrolidinamine,N-[3-(methylthio)propyl]-N-[[2-(trifluoromethyl)phenyl]methyl]-, (3S)-,(2S,3S)-2,3-dihydroxybutanedioate
Butanedioic acid, oxo[5-(phenylmethoxy)-1H-indol-3-yl]-, 1-ethyl4-methyl ester
10-Undecenamide, N,N'-[1,2-cyclobutanediylbis(methylene)]bis-
Hexanamide, N,N'-(2,2,4,4-tetramethyl-1,3-cyclobutanediyl)bis[2-ethyl-
1,4-Butanedione, 1,1'-(2,5-thiophenediyl)bis[4-(2-thienyl)-
3-Pyrrolidinamine,N-[(3R)-tetrahydro-3-furanyl]-N-[[2-(trifluoromethyl)phenyl]methyl]-, (3S)-,(2R,3R)-2,3-dihydroxybutanedioate
Butanedioic acid, methylene-, 4-ethyl ester, lead salt
Butanedioic acid, 1,1-dimethylethyl1-methyl-2-oxo-2-[4-(10-undecenyloxy)phenyl]ethyl ester
Silacyclobutane, 1-(2,6-dimethylphenyl)-1-phenyl-
2,3-Butanedione,2,3-bis[(2Z)-2-[1-(2-hydroxyphenyl)ethylidene]hydrazone], (2E,3E)-
Butane, 1,1'-[(2-iodoethylidene)bis(oxy)]bis-
Cyclobutane, propyl-
Butanedioic acid, mono[1-(formylamino)ethyl] ester
1,3-Butanediol, 3-benzoate
1,4-Butanediol, 1-(4-chlorophenyl)-
1,3-Cyclobutanedione, 2,2-dichloro-
Butanenitrile, 3-mercapto-
Butanedioic acid,mono[2-[5,6-bis(4-methoxyphenyl)-1H-pyrazolo[3,4-b]pyrazin-1-yl]ethyl]ester
1,1'-[ethane-1,1-diylbis(thio)]dibutane
Fatty acids, tall-oil, 1,4-butanediyl esters
Butanedioic acid, bis(phenylmethylene)-, dimethyl ester, (E,E)-
1,3-Butanedione,4,4-difluoro-4-(2,3,3,4,4,5,5-heptafluorotetrahydro-2-furanyl)-1-phenyl-
3-hydroxy-3-methyl-2-phenylbutanehydrazide
Butanedioic acid, (tetrazolo[1,5-b]pyridazin-6-ylhydrazono)-, dimethylester
Butanedioic acid,[(2,3-dihydro-1,4-benzodioxin-6-yl)(4-methoxyphenyl)methyl]-, 1-ethylester
1,1,2,2-Butanetetracarbonitrile, 4-oxo-4-phenyl-
1,3-Butanediol, 2-(6-chloro-2-hexynyl)-4,4-dimethoxy-, diacetate
1,4-BUTANEDIYL,1-AMINO-2-CARBOXY-2-FORMYL-4-HYDROXY-