acetic acid methylene diester; methylene diacetate
(2- Chloropyrid-5-yl)methylene thiourea
(3′→5′)methylene acetal dinucleosides
(3-chloro-4-fluoroanilino)-methylene malonate
(substituted methylene)hydroxymethylcyclododecanol
11-O-ethylene-12-methylene erythromycin derivative
1-Bromo-2-methylnaphthalene
1-butyl-1-methylethylene
1-ethyl-1-methylethylene
2-(Acetyl ethoxycarbonyl) -methylene-tetrahydroimidazole)
2’-methylene bis-dithio-bis-thiirane
2’-methylene-bis-6-tert-butyl-4-methyl-phenol
2-bromo-6-methoxynaphthalene
2-hydroxy-3-methoxyphenylmethylene
2-methyl-3-methylene-pentane