| Patents for C07D 257 - Heterocyclic compounds containing rings having four nitrogen atoms as the only ring hetero atoms (9,612) |
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| 09/04/1991 | CN1013769B Method for preparation of improvement leukotriene antagonists |
| 08/28/1991 | EP0443983A1 Acyl compounds |
| 08/23/1991 | CA2036713A1 Photographic material and process comprising a compound capable of forming a wash out dye |
| 08/23/1991 | CA2036037A1 Photographic material and process |
| 08/22/1991 | WO1991012230A1 Nitric acid esters of cyclohexanol derivatives |
| 08/22/1991 | DE4004841A1 Salpetersaeureester von cyclohexanol-derivaten Salpetersaeureester of cyclohexanol derivatives |
| 08/22/1991 | CA2075988A1 Nitric acid esters of cyclohexanol derivatives |
| 08/21/1991 | EP0442448A2 Heterocyclic carboxylic acids and esters |
| 08/20/1991 | US5041638 Alkenoic acid derivatives |
| 08/14/1991 | EP0440606A1 Macrocyclic chelating agents and chelates thereof |
| 08/14/1991 | CA2036192A1 Heterocyclic carboxylic acids and esters |
| 08/13/1991 | US5039814 Chemical intermediates for angiotensin antagonist |
| 08/06/1991 | US5037990 Antagonist, antagonism, bronchodilator; antiischemic agents, treatment of cardiovascular disorder, kidney dialysis; and antiulcer agent |
| 07/31/1991 | EP0439387A2 Binuclear metal macrocyclic and macrobicyclic complexes for oxygen separation and transport |
| 07/31/1991 | EP0438869A1 Improvements in and relating to angiotensin II antagonists |
| 07/31/1991 | EP0438851A2 Composition and process for inflating a safety crash bag |
| 07/30/1991 | US5035987 Development inhibitor releasing couplers |
| 07/30/1991 | US5035740 Herbicidal compounds |
| 07/24/1991 | CA2034742A1 Binuclear metal macrocyclic and macrobicyclic complexes for oxygen separation and transport |
| 07/23/1991 | US5034537 Leukotriene antagonists |
| 07/23/1991 | US5034418 Diphenylethylene derivatives, pharmaceutical compositions containing same and treatment methods |
| 07/23/1991 | US5034417 New alkanesulfonanilide derivatives, processes for preparation thereof and pharmaceutical composition comprising the same |
| 07/23/1991 | US5034409 Pyrrole carboxylic acids and esters for blood platelet aggregation inhibition |
| 07/23/1991 | US5034388 Acrylic acid derivatives substituted with benzene |
| 07/20/1991 | WO1991010669A1 Chelating compounds |
| 07/20/1991 | CA2072080A1 Chelating compounds |
| 07/16/1991 | US5032606 Novel fluorinated resorcinol ethers and their use as anti-allergics and anti-inflammatories |
| 07/09/1991 | US5030652 Indan derivatives and pharmaceutical preparation thereof |
| 07/03/1991 | EP0435134A2 LTB4 Synthesis inhibitors |
| 06/26/1991 | EP0434385A2 Use of macrocyclic nitrogen containing compounds for the treatment of retroviral infections |
| 06/26/1991 | EP0434346A1 10-(2'-hydroxy-3'-polyoxaalkyl)-1,4,7-triscarboxymethyl-1,4,7,10-tetraazacyclododecane |
| 06/26/1991 | EP0434345A1 10-(2'-hydroxy-3'-alkoxy)-1,4,7-triscarboxymethyl-1,4,7,10-tetraazacyclododecanes |
| 06/26/1991 | EP0433779A2 Process for the preparation of sulfonyl urea salts and their use as herbizides |
| 06/25/1991 | US5026695 7-acylamino-3-substituted cephalosporanic acid derivatives |
| 06/25/1991 | US5026628 Images with improved acutance |
| 06/23/1991 | CA2031587A1 10-(2'-hydroxy-3'-polyoxaalkyl)-1,4,7-triscarboxymethyl-1,4 ,7,10-tetraazacyclododecane |
| 06/23/1991 | CA2031585A1 10-(2'-hydroxy-3'-alkoxy-1,4,7-triscarboxymethyl-1,4,7,10-t etraazacyclododecanes |
| 06/20/1991 | CA2032398A1 Process for preparing sulphonylurea salts, new sulphonylurea salts, and their use as herbicides |
| 06/19/1991 | EP0433001A1 Insecticidal compounds |
| 06/19/1991 | EP0432503A1 Thiocarboxylic acid esters and fungicides containing them |
| 06/19/1991 | CA2032393A1 Ltb4 synthesis inhibitors |
| 06/18/1991 | US5025028 Asthma |
| 06/04/1991 | US5021581 Fungicides |
| 06/04/1991 | US5021441 Organic compounds and their pharmaceutical use |
| 06/04/1991 | US5021409 Antiviral cyclic polyamines |
| 06/04/1991 | US5021322 Photographic element comprising a development inhibitor releasing compound having a linking group between the carrier and the inhibitor |
| 06/04/1991 | US5021236 Method of enhancing NMR imaging using chelated paramagnetic ions bound to biomolecules |
| 05/31/1991 | CA2030961A1 Angiotensin ii antagonists |
| 05/28/1991 | US5019152 Substituted tetrazolinones and their use as herbicides |
| 05/25/1991 | WO1991008201A1 (hetero) 4-arylmethoxy phenyl diazole derivatives, method for preparing same, and their therapeutical applications |
| 05/25/1991 | CA2073064A1 (hetero) 4-arylmethoxy phenyl diazole derivatives, method for preparing same and their therapeutical applications |
| 05/21/1991 | US5017214 Herbicidal sulfonamides |
| 05/17/1991 | CA2030069A1 Thiocarboxylic esters and fungicides containing them |
| 05/15/1991 | EP0427620A1 Process for the separation of a gas from a gas mixture using metal complexes of cyclic polynitrogenated derivatives |
| 05/15/1991 | EP0427595A1 Process for the synthesis of cyclic polynitrogenated compounds |
| 05/15/1991 | CN1012614B Ceph-3-ene-4-carboxylic acid derivatives and the prepn. |
| 05/14/1991 | US5015651 Treatment of hypertension with 1,2,4-angiotensin II antagonists |
| 05/10/1991 | CA2029455A1 Process for the separation of a gas from a gas mixture using metal complexes of cyclic polynitrogenated derivatives |
| 05/10/1991 | CA2029454A1 Process for the synthesis of cyclic polynitrogenated compounds |
| 05/07/1991 | US5013647 Removal of interfering reducing substances with tetrazolium salts in redox measurement reactions |
| 05/02/1991 | EP0269646B1 Photographic system |
| 04/24/1991 | WO1991005762A1 Multi-site metal chelating agents |
| 04/24/1991 | CN1012434B Improvements in or relating to leukotriene antagonists |
| 04/24/1991 | CN1012433B Improvements in or relating to leukotriene antagonists |
| 04/24/1991 | CA2069886A1 Multi-site metal chelating agents |
| 04/23/1991 | US5010205 Antihypercholesterolemic tetrazol-1-yl intermediates |
| 04/23/1991 | CA1283419C Substituted di-t-butylphenols |
| 04/20/1991 | WO1991005766A1 2-substituted 2-cyclopentenone and carcinostatic agent and osteogenesis promoter containing the same as active ingredient |
| 04/20/1991 | CA2044179A1 2-substituted-2-cyclopentenone compound and anticancer agent and bone formation accelerator comprising same as active ingredient |
| 04/17/1991 | EP0416033A4 Macrocyclic chelates and methods of use thereof |
| 04/10/1991 | EP0421365A2 Tetrazoleacetic acid derivatives having aldose reductase inhibitory activity |
| 04/10/1991 | EP0421221A2 Colour photographic recording material with a DIR coupler |
| 04/10/1991 | EP0420942A1 Macrocyclic bifunctional chelants, complexes thereof and their antibody conjugates |
| 04/09/1991 | US5006643 Process for preparing isothiocyanato functionalized metal complexes |
| 04/09/1991 | US5006542 Arylthioalkylphenyl carboxylic acids, derivatives thereof, compositions containing same and method of use |
| 04/03/1991 | EP0419676A1 Thionaphthalene derivatives, method of producing the same, and antiallergic agent containing the same |
| 03/27/1991 | EP0418696A2 Derivatives of aminoacids |
| 03/26/1991 | US5003075 Preparation of substituted tetrazolinones |
| 03/26/1991 | US5002972 Compound and composition of substituted hexenoic acid derivatives useful for treating thromboxane A2 mediated diseases |
| 03/26/1991 | US5002957 Azaneophyl sulfides, and their use as pesticides |
| 03/26/1991 | US5002703 Benzoic acid and benzoic acid ester derivatives having antiinflammatory and analgesic activity |
| 03/23/1991 | CA2025860A1 Amino acid derivatives |
| 03/13/1991 | EP0416033A1 Macrocyclic chelates and methods of use thereof. |
| 03/13/1991 | EP0415981A1 Retroviral protease inhibitors |
| 03/12/1991 | US4999345 Sulfonamide derivatives and drugs obtained therefrom |
| 03/12/1991 | CA1281331C Thio-substituted aromatic alcohols |
| 03/06/1991 | WO1991003261A1 Novel magnetic resonance imaging agents |
| 03/06/1991 | CA2065415A1 Magnetic resonance imaging agents |
| 02/27/1991 | EP0414067A2 Substituted arylsulfonyl-aminoguanidinoazine |
| 02/19/1991 | US4994560 Functionalized polyamine chelants and radioactive rhodium complexes thereof for conjugation to antibodies |
| 02/19/1991 | US4994489 Ester derivatives of diarylacetylenes, their compositions and their use in acne treatment |
| 02/19/1991 | US4994479 Antagonists of SRS-A(slow reacting substance of anaphylaxis); antiallergens, antiischemic agents |
| 02/19/1991 | US4994209 Nonlinear optical material |
| 02/12/1991 | US4992576 Intermediates for leukotriene antagonists |
| 02/12/1991 | US4992360 Silver halide light-sensitive photographic material containing a novel yellow coupler |
| 02/06/1991 | EP0411894A2 Azole compounds and their use as transglutaminase inhibitors |
| 02/05/1991 | US4990614 Glutamate receptor inhibitors |
| 02/05/1991 | US4990533 Antiarthritic agents |
| 02/05/1991 | US4990526 Skin disorders, antiallergens, antiinflammatory agents |
| 02/01/1991 | CA2022110A1 Azole compounds and their use as transglutaminase inhibitors |