Abstract: The invention relates to novel [(5,6,9a-substituted-3-oxo-1,2,9,9a-tetrahydro-3H-fluoren-7-yl)-oxy]alkano ic and cycloalkanoic acids and their analogs, esters, salts and derivatives. These compounds are synthesized by methods selected from a number of synthetic routes depending on the particular structure, choice of intermediate or preferred reaction sequence. The compounds are useful in the treatment and prevention of injury to the brain and spinal chord due to accidents, ischemic stroke and hydrocephalus; compositions for such uses are also disclosed.
Type:
Grant
Filed:
December 19, 1980
Date of Patent:
February 16, 1982
Assignee:
Merck & Co., Inc.
Inventors:
Edward J. Cragoe, Jr., Gerald E. Stokker, Norman P. Gould
Abstract: An improved tamperproof container for lyophilized material wherein the container comprises a vial having flange about its opening. Below the flange, but spaced apart therefrom is a shoulder to define an indented neck therebetween. The opening is sealed with a pierceable stopper. An overcap extends over the flange and about the neck to form a skirt about the neck. The skirt has at least a portion thereof extending inwardly in gripping reaction with the neck and limited in removal by contact with the underside of the flange whereby the cap cannot be removed without destroying its structural integrity.
Abstract: In a process for regenerating the activated carbon and in the purification of brown phosphoric acid or alkali phosphates obtained via the so-called wet process employing mineral acid digestion of crushed phosphate rock, the activated carbon used to filter brown H.sub.3 PO.sub.4 is removed from service, washed with water, the initial washings being recovered to reclaim phosphoric acid, and then steeped in a basic aqueous solution, e.g., aqueous alkali hydroxide, alkali carbonate, ammonium hydroxide, loweralkyl amines or loweralkanol amines. After again water washing the activated carbon, to remove residual base, the activated carbon is either returned to service or steeped in an aqueous solution of mineral acid, e.g., sulfuric, hydrochloric, or nitric acid, again washed with water to remove residual acid and returned to service. Usually, the acid steep need not be employed with every base cycle to maintain good decolorization, although if desired the acid steep can be used with each caustic cycle.
Abstract: 2,3-Substituted-1,2-isothiazolium salts have antibacterial and antifungal activity and are useful in agriculture against diseases and decay of fruits and vegetables, as well as a slimicide in industry.
Type:
Grant
Filed:
November 23, 1977
Date of Patent:
September 29, 1981
Assignee:
Merck & Co., Inc.
Inventors:
Joshua Rokach, Clarence S. Rooney, Edward J. Cragoe, Jr.
Abstract: A method of wetting a contact lens present in the human eye which comprises inserting a water soluble solid polymer into the cul-de-sac of the eye.
Abstract: Virus infections of eye, skin and mucous membrane tissue are effectively treated by controlled release topical application of interferon inducers.
Abstract: 2,3-Substituted-1,2-isothiazolium salts have antibacterial and antifungal activity and are useful in agriculture against diseases and decay of fruits and vegetables, as well as a slimicide in industry.
Type:
Grant
Filed:
February 8, 1979
Date of Patent:
May 12, 1981
Assignee:
Merck & Co., Inc.
Inventors:
Joshua Rokach, Clarence S. Rooney, Edward J. Cragoe, Jr.
Abstract: Novel diphenyl and loweralkyl substituted diphenyl polyamines are useful antimicrobial agents, as well as algae inhibitors. They are especially useful because of their low toxicity, and as such are advantageously included as the active agent in surgical scrubs, antibacterial soaps, as preservatives in cosmetic preparations, and the like. They also can be used for topical treatment of dermatological conditions having a bacterial origin or implication such as Acne vulgaris.
Type:
Grant
Filed:
March 12, 1979
Date of Patent:
April 7, 1981
Assignee:
Merck & Co., Inc.
Inventors:
Richard A. Dybas, Nathaniel Grier, Bruce E. Witzel
Abstract: An admixture of granular activated carbon (GAC) and bone char (BC) can be effectively employed to decolorize and to deash white cane sugar liquors. Use of this admixture in place of bone char exclusively results in significantly improved decolorization. The GAC/BC admixture can be effectively reactivated at a temperature within the limit of 900.degree. F. to 1200.degree. F.
Abstract: Antimicrobial agents suitable for use in aqueous systems for their preservation against biodeterioration include substitutedpiperidinomethyl-propenenitriles and propanenitriles. The unsaturated compounds are prepared by reaction of a suitable piperidine with cyano acetic acid and formaldehyde: the propane derivatives therefrom by nucleophilic addition. spThis application is a continuation-in-part of Ser. No. 795,693, filed May 11, 1977, now abandoned.
Type:
Grant
Filed:
February 5, 1979
Date of Patent:
January 27, 1981
Assignee:
Merck & Co., Inc.
Inventors:
Nathaniel Grier, Richard A. Dybas, Bruce E. Witzel
Abstract: Gas streams contaminated with acid and acid precursor gases and vapors are purified by contacting the gas streams with activated carbon impregnated with sodium hydroxide.
Type:
Grant
Filed:
November 9, 1978
Date of Patent:
July 29, 1980
Assignee:
Calgon Corporation
Inventors:
Rabindra K. Sinha, Charles K. Polinsky, S. David Cifrulak, Norman J. Wagner
Abstract: An improved tamperproof container for lyophilized material wherein the container comprises a vial having flange about its opening. Below the flange, but spaced apart therefrom is a shoulder to define an indented neck therebetween. The opening is sealed with a pierceable stopper. An overcap extends over the flange and about the neck to form a skirt about the neck. The skirt has at least a portion thereof extending inwardly in gripping relation with the neck and limited in removal by contact with the underside of the flange whereby the cap cannot be removed without destroying its structural integrity.
Abstract: Insulation members having spaced apart walls, and at least a partial vacuum in the chamber defined by the walls are filled with activated carbon. The filling is accomplished under vacuum conditions, and activated carbon, degassed and having a density of greater than 0.3 grams/cm.sup.3 is employed to at least partially fill the chamber.
Abstract: A carbon supported catalyst used for carbon monoxide oxidation is chemically modified by treating the activated carbon support with an oxidizing agent and/or a hydrophobic compound prior to impregnation with the catalyst mixture. The thus treated catalytic carbon is capable of oxidizing carbon monoxide in an air stream containing sulfur dioxide over an extended period of time.
Abstract: An ophthalmic applicator device for mechanically inserting solid medicaments in the form of inserts into the cul-de-sac of the eye, comprising an elongated tip of non-toxic, pliable material terminating in a groove through an end of said tip sufficient to form two flexible, opposed termini of said tip whereby said insert is releasably gripped by frictional engagement between said termini; said groove having cross-sectional conformation and dimensions sufficient to releasably grip said insert, and at least one dimension sufficiently less than the greatest dimension of said insert to result in removal of said insert from the ophthalmic applicator device by contact of said insert with the cul-de-sac of the eye; and a handle attached to said tip at the end of said tip opposite said termini, and forming an interior angle therewith of from about 30.degree. to about 120.degree..
Abstract: Methanol is vaporized at a temperature of from about 200.degree. C.-455.degree. C. and passed over a cobalt molybdate catalyst or a doped cobalt molybdate catalyst at a flow rate of from 60-200 cc./minute. The effluent gas comprises essentially methane and hydrogen in addition to some water vapors and CO.sub.2.
Abstract: Solid unit dosage medicaments which are suitable for use in animals and humans are prepared with hydroxypropyl cellulose as the primary formulating excipient. These medicaments are particularly suitable for ophthalmic use since they are slowly but completely water soluble when they are inserted in the cul-de-sac of the eye and thus provide for a convenient means of prolonged treatment of the eye with concomitant reduced dosing frequency.
Type:
Grant
Filed:
November 13, 1978
Date of Patent:
December 18, 1979
Assignee:
Merck & Co., Inc.
Inventors:
Edward M. Cohen, Wayne M. Grim, Richard J. Harwood, Gunvant N. Mehta
Abstract: Novel diphenyl and loweralkyl substituted diphenyl polyamines are useful antimicrobial agents, as well as algae inhibitors. They are especially useful because of their low toxicity, and as such are advantageously included as the active agent in surgical scrubs, antibacterial soaps, as preservatives in cosmetic preparations, and the like. They also can be used for topical treatment of dermatological conditions having a bacterial origin or implication such as Acne vulgaris.
Type:
Grant
Filed:
December 3, 1976
Date of Patent:
October 23, 1979
Assignee:
Merck & Co., Inc.
Inventors:
Richard A. Dybas, Nathaniel Grier, Bruce E. Witzel
Abstract: Through total synthesis methods developed in the assignee's laboratories, new as well as old penicillin and cephalosporin compounds (all containing the beta-lactam functional group) have been prepared. One of the key intermediates prepared by total synthesis has the 7-amino (6-amino in the case of a penicillin derivative) group in the alpha configuration. The instant invention provides a general route for preparing the 7.beta.-amino (or 6.beta.-amino) compound, through the formation of an imino-containing intermediate, followed by hydrolysis to the desired epimer. Novel intermediate products are provided. The compounds having the desired beta epimer can be converted to acylaminoantibiotics.