Abstract: This invention relates to 2-?(1H-benzimidazol-2-ylsulfinyl)methyl!benzenamines that are useful in the treatment and prevention of ulcers.

Abstract: A drug delivery system adapted to release an effective amount of a drug at pH values of about 1 to 7 without releasing a significant amount of the drug at pH values of about 7 and above, the system comprising a polymeric material and a drug covalently bonded to the polymeric material through a pH sensitive covalent bond capable of being cleaved in the pH range of 1 to about 7.

Abstract: Described are antihypertensive agents selected from the class consisting of 2[4(tetrahydro-2-furoyl)-piperazino]-4-amino-6,7-dimethoxyquinazoline and 2-[4(tetrahydropyran-2-carbonyl)-piperazinyl]-4-amino-6,7-dimethoxyquinazo line, and pharmaceutically acceptable acid addition salts thereof. The compounds are highly water soluble and can be administered in time release form as well as parenterally, including intravenously.

Abstract: This invention provides 4-aroyl substituted phenoxy acetic acids and tetrazoles of the formula ##STR1## wherein R is a phenyl ring, a substituted phenyl ring, or naphthyl; R.sub.1 is --CH.sub.2 COOH or methyl tetrazole, and X.sub.1 and X.sub.2 are each a halogen or loweralkyl, or when taken together form with the two attached carbons a phenyl ring.These compounds are useful as antihypertensive agents, diuretics and uricosuric agents.

Abstract: This invention covers diacylated derivatives of .gamma.-glutamyl dopamine selected from the group consisting of ##STR1## where R is a C.sub.1 -C.sub.12 straight or branched chain alkyl radical, a phenyl ring or a substituted phenyl ring and R' is H or a C.sub.1 -C.sub.7 alkyl, and a pharmaceutically acceptable acid addition salt thereof.The compounds of this invention are useful to increase the renal blood flow by being administered to warm-blooded animals by clinically accepted routes of administration such as oral, parenteral, rectal and the like.

Abstract: Described are antihypertensive agents selected from the class consisting of 2[4(tetrahydro-2-furoyl)-piperazino]-4-amino-6,7-dimethoxyquinazoline and 2-[4(tetrahydropyran-2-carbonyl)-piperazinyl]-4-amino-6,7-dimethoxyquinazo line, and pharmaceutically acceptable acid addition salts thereof. The compounds are highly water soluble and can be administered in time release form as well as parenterally, including intravenously.

Abstract: Covers the esters of .gamma.-glutamyl amide of dopamine selected from the group consisting of ##STR1## where R is a C.sub.1 -C.sub.18 alkyl radical, and a pharmaceutically acceptable acid addition salt thereof. Also covers the use of said esters of .gamma.-glutamyl amide of dopamine to increase renal blood flow by administering said amide to warm-blooded mammals by clinically acceptable routes of administration such as oral, parenteral, rectal, etc.