It has been found that certain 4-substituted 2-hydroxylaminomethyl phenols or their nontoxic pharmaceutically acceptable acid addition salts are excellent diuretic, saluretic and anti-inflammatory agents.

The present invention relates to novel "pseudo" nonapeptide and decapeptide derivatives of LHRH. More particularly the present invention relates to derivatives of LHRH wherein the nitrogen atom of at least one of the amide bonds has been alkylated.

Novel cephalosporin and penicillin antibiotic derivatives.

Novel cephalosporin and penicillin antibiotic derivatives.

Novel 7-(halomethylaryl)acetamidocephalosporin derivatives useful as antibiotic agents.

Novel 7-(cyanomethylaryl)acetamidocephalosporin derivatives useful as antibiotic agents.

The present invention relates to novel "pseudo" nonapeptide and decapeptide derivatives of LHRH. More particularly the present invention relates to derivatives of LHRH wherein the nitrogen atom of at least one of the amide bonds has been alkylated.

Novel cephalosporin compounds of the following formula are useful as antibiotic agents: ##STR1##

Novel cephalosporin compounds of the following formula are useful as antibiotic agents: ##STR1##

Novel pyridylthiomethyl substituted cephalosporin compounds having the formula ##STR1## wherein R is 2-pyridyl, 3-pyridyl or 4-pyridyl.