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- 2,2'-bipyridine
- 2,2'-bipyridine--2,2'-bipyridyl
- 2,2'-bipyridyl
- 2,2'-bipyridyl; 2,2'-bipyridine
- 2,2-bis-1,3-propanediol; pentaerythritol
- 2,2-bis(4-hydroxyphenyl)-hexafluoropropane
- 2,2-bis(4-hydroxyphenyl)-popane
- 2,2-bis(4-hydroxyphenyl)-popane; bisphenol a
- 2,2-bis-butane
- 2--2-bis(enthyl sulfonyl)-propane--sulfonal
- 2,2-bis(ethylsulfonyl)butane
- 2,2-bis(ethylsulfonyl)butane--methylethyl ketone diethylsulfone-- trional
- 2,2-bis(ethylsulfonyl)-propane
- 2,2-bis-hexafluoropropane
- 2,2-bis(hydroxymethyl)-1,3-propanediol
- 2,2-bis(hydroxymethyl)-1,3-propanediol; pentaerythritol
- 2,2-bis (para-chlorophenyl)-1,1-dichloroethane
- 2,2-bis(p-chlorophenyl)-1,1,1-trichloroethane
- 2,2-bis(p-chlorophenyl)-1,1,1-trichloroethane--ddt
- 2,2-bisphthalide; phenolphthalein
- 2,2-bis(p-hydroxy-phenyl)phthalide
- 2,2-bis(p-hydroxy-phenyl)phthalide; phenolphthalein
- 2,2-bis(p-methoxyphenyl)-trichloromethane
- 2,2-bis-popane; bisphenol a
- 2,2-bis-propane
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