X ray scattering device

X-ray opaque filler useful in dental and medical restorative com

X-ray opaque, enamel-matching dental filling composition

Xanthate-Lewis acid complexes

Xanthates of 2,3,4,5-tetrahydropyrimidine

Xanthene and thioxanthene derivatives

Xanthene and thioxanthene derivatives, compositions thereof and

Xanthene compounds

Xanthene derivatives and process for the preparation thereof

Xanthenone-yl esters of phosphoric and phosphonic acids

Xanthenyl semicarbazides

Xanthogen disulphides with functional groups

Xanthogen disulphides with functional groups

Xeronine, a new alkaloid, useful in medical, food and industrial

Xylene isomerization process

Xylene-diamines as antiviral agents

Xylene-formaldehyde resin compositions and process

Xylenes separation process