Pyrido[4,3-b][1,4]oxazines and pyrido[4,3-b][1,4]thiazines

Pyrimidine derivatives, their production and use

Pyrimidines substituted by nitrogen-containing heterocyclic ring

Pyrone derivatives as protease inhibitors and antiviral agents

Pyrone derivatives as protease inhibitors and antiviral agents

Pyrrole cephalosporin derivatives

Pyrrolo- and pyrido-1,4-benzoxazin-3-(2H)-one derivatives as mic

Quarnary ammonium polymeric anti-microbial agent

Quaternaries of tertiary amino-substituted thiazines

Quaternary ammonium derivatives of 1,4 thiazine sulfonic acids

Quaternary ammonium salts of .alpha.-1,4-thiazine alkanephosphon

Quinolinecarboxylic acid derivative starting compounds

Quinophthalone dyes for cellulose-containing fibers

R-isomers of nonnucleoside inhibitors

Racemic separation of 2,6-trans-dimethymorpholine

Reactions of thiooxime cephalosporin and penicillin derivatives

Reactive dyes of the dioxazine series

Reactive dyes, their preparation and their use

Reactive dyestuffs

Reactive stabilizing compounds containing a sterically hindered