有限公司 Salicylic Acids
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)&F1y3x PHARMACEUTICAL APPENDIX to THE
)&f1y3X PHARMACEUTICAL APPENDIX TO THE HARMONIZED TARIFF SCHEDULE )&f1y3X PHARMACEUTICAL APPENDIX TO THE TARIFF SCHEDULE 3 Table 1. This table enumerates products described by International Non-proprietary Names (INN) which shall be entered free of duty under general note 13 to the tariff schedule. The Chemical Abstracts Service (CAS) registry numbers also set forth in this table are included to assist in the identification of the products concerned. For purposes of the tariff schedule, any references to a product enumerated in this table includes such product by whatever name known. Product CAS No. Product CAS No. ABAMECTIN 65195-55-3 ACTODIGIN 36983-69-4 ABANOQUIL 90402-40-7 ADAFENOXATE 82168-26-1 ABCIXIMAB 143653-53-6 ADAMEXINE 54785-02-3 ABECARNIL 111841-85-1 ADAPALENE 106685-40-9 ABITESARTAN 137882-98-5 ADAPROLOL 101479-70-3 ABLUKAST 96566-25-5 ADATANSERIN 127266-56-2 ABUNIDAZOLE 91017-58-2 ADEFOVIR 106941-25-7 ACADESINE 2627-69-2 ADELMIDROL 1675-66-7 ACAMPROSATE 77337-76-9 ADEMETIONINE 17176-17-9 ACAPRAZINE 55485-20-6 ADENOSINE PHOSPHATE 61-19-8 ACARBOSE 56180-94-0 ADIBENDAN 100510-33-6 ACEBROCHOL 514-50-1 ADICILLIN 525-94-0 ACEBURIC ACID 26976-72-7 ADIMOLOL 78459-19-5 ACEBUTOLOL 37517-30-9 ADINAZOLAM 37115-32-5 ACECAINIDE 32795-44-1 ADIPHENINE 64-95-9 ACECARBROMAL 77-66-7 ADIPIODONE 606-17-7 ACECLIDINE 827-61-2 ADITEREN 56066-19-4 ACECLOFENAC 89796-99-6 ADITOPRIM 56066-63-8 ACEDAPSONE 77-46-3 ADOSOPINE 88124-26-9 ACEDIASULFONE SODIUM 127-60-6 ADOZELESIN 110314-48-2 ACEDOBEN 556-08-1 ADRAFINIL 63547-13-7 ACEFLURANOL 80595-73-9 ADRENALONE -
The Use of Stems in the Selection of International Nonproprietary Names (INN) for Pharmaceutical Substances
WHO/PSM/QSM/2006.3 The use of stems in the selection of International Nonproprietary Names (INN) for pharmaceutical substances 2006 Programme on International Nonproprietary Names (INN) Quality Assurance and Safety: Medicines Medicines Policy and Standards The use of stems in the selection of International Nonproprietary Names (INN) for pharmaceutical substances FORMER DOCUMENT NUMBER: WHO/PHARM S/NOM 15 © World Health Organization 2006 All rights reserved. Publications of the World Health Organization can be obtained from WHO Press, World Health Organization, 20 Avenue Appia, 1211 Geneva 27, Switzerland (tel.: +41 22 791 3264; fax: +41 22 791 4857; e-mail: [email protected]). Requests for permission to reproduce or translate WHO publications – whether for sale or for noncommercial distribution – should be addressed to WHO Press, at the above address (fax: +41 22 791 4806; e-mail: [email protected]). The designations employed and the presentation of the material in this publication do not imply the expression of any opinion whatsoever on the part of the World Health Organization concerning the legal status of any country, territory, city or area or of its authorities, or concerning the delimitation of its frontiers or boundaries. Dotted lines on maps represent approximate border lines for which there may not yet be full agreement. The mention of specific companies or of certain manufacturers’ products does not imply that they are endorsed or recommended by the World Health Organization in preference to others of a similar nature that are not mentioned. Errors and omissions excepted, the names of proprietary products are distinguished by initial capital letters. -
Pharmaceutical Appendix to the Tariff Schedule 2
Harmonized Tariff Schedule of the United States (2007) (Rev. 2) Annotated for Statistical Reporting Purposes PHARMACEUTICAL APPENDIX TO THE HARMONIZED TARIFF SCHEDULE Harmonized Tariff Schedule of the United States (2007) (Rev. 2) Annotated for Statistical Reporting Purposes PHARMACEUTICAL APPENDIX TO THE TARIFF SCHEDULE 2 Table 1. This table enumerates products described by International Non-proprietary Names (INN) which shall be entered free of duty under general note 13 to the tariff schedule. The Chemical Abstracts Service (CAS) registry numbers also set forth in this table are included to assist in the identification of the products concerned. For purposes of the tariff schedule, any references to a product enumerated in this table includes such product by whatever name known. ABACAVIR 136470-78-5 ACIDUM LIDADRONICUM 63132-38-7 ABAFUNGIN 129639-79-8 ACIDUM SALCAPROZICUM 183990-46-7 ABAMECTIN 65195-55-3 ACIDUM SALCLOBUZICUM 387825-03-8 ABANOQUIL 90402-40-7 ACIFRAN 72420-38-3 ABAPERIDONUM 183849-43-6 ACIPIMOX 51037-30-0 ABARELIX 183552-38-7 ACITAZANOLAST 114607-46-4 ABATACEPTUM 332348-12-6 ACITEMATE 101197-99-3 ABCIXIMAB 143653-53-6 ACITRETIN 55079-83-9 ABECARNIL 111841-85-1 ACIVICIN 42228-92-2 ABETIMUSUM 167362-48-3 ACLANTATE 39633-62-0 ABIRATERONE 154229-19-3 ACLARUBICIN 57576-44-0 ABITESARTAN 137882-98-5 ACLATONIUM NAPADISILATE 55077-30-0 ABLUKAST 96566-25-5 ACODAZOLE 79152-85-5 ABRINEURINUM 178535-93-8 ACOLBIFENUM 182167-02-8 ABUNIDAZOLE 91017-58-2 ACONIAZIDE 13410-86-1 ACADESINE 2627-69-2 ACOTIAMIDUM 185106-16-5 ACAMPROSATE 77337-76-9 -
Marrakesh Agreement Establishing the World Trade Organization
No. 31874 Multilateral Marrakesh Agreement establishing the World Trade Organ ization (with final act, annexes and protocol). Concluded at Marrakesh on 15 April 1994 Authentic texts: English, French and Spanish. Registered by the Director-General of the World Trade Organization, acting on behalf of the Parties, on 1 June 1995. Multilat ral Accord de Marrakech instituant l©Organisation mondiale du commerce (avec acte final, annexes et protocole). Conclu Marrakech le 15 avril 1994 Textes authentiques : anglais, français et espagnol. Enregistré par le Directeur général de l'Organisation mondiale du com merce, agissant au nom des Parties, le 1er juin 1995. Vol. 1867, 1-31874 4_________United Nations — Treaty Series • Nations Unies — Recueil des Traités 1995 Table of contents Table des matières Indice [Volume 1867] FINAL ACT EMBODYING THE RESULTS OF THE URUGUAY ROUND OF MULTILATERAL TRADE NEGOTIATIONS ACTE FINAL REPRENANT LES RESULTATS DES NEGOCIATIONS COMMERCIALES MULTILATERALES DU CYCLE D©URUGUAY ACTA FINAL EN QUE SE INCORPOR N LOS RESULTADOS DE LA RONDA URUGUAY DE NEGOCIACIONES COMERCIALES MULTILATERALES SIGNATURES - SIGNATURES - FIRMAS MINISTERIAL DECISIONS, DECLARATIONS AND UNDERSTANDING DECISIONS, DECLARATIONS ET MEMORANDUM D©ACCORD MINISTERIELS DECISIONES, DECLARACIONES Y ENTEND MIENTO MINISTERIALES MARRAKESH AGREEMENT ESTABLISHING THE WORLD TRADE ORGANIZATION ACCORD DE MARRAKECH INSTITUANT L©ORGANISATION MONDIALE DU COMMERCE ACUERDO DE MARRAKECH POR EL QUE SE ESTABLECE LA ORGANIZACI N MUND1AL DEL COMERCIO ANNEX 1 ANNEXE 1 ANEXO 1 ANNEX -
Opinion on Salicylic Acid (CAS 69-72-7) - Submission I - Corrigendum of 20-21 June 2019
SCCS/1601/18 Final Opinion Corrigendum of 20-21 June 2019 Scientific Committee on Consumer Safety SCCS OPINION ON salicylic acid (CAS 69-72-7) Submission I The SCCS adopted the final Opinion by written procedure on 21 December 2018 Corrigendum of 20-21 June 2019 SCCS/1601/18 Final Opinion Opinion on salicylic acid (CAS 69-72-7) - Submission I - Corrigendum of 20-21 June 2019 ___________________________________________________________________________________________ ACKNOWLEDGMENTS Members of the Working Group are acknowledged for their valuable contribution to this Opinion. The members of the Working Group are: For the preliminary and the final Opinion The SCCS members: Dr U. Bernauer Dr L. Bodin Prof. Q. Chaudhry (SCCS Chair) Prof. P.J. Coenraads (SCCS Vice-Chair and Chairperson of the WG) Prof. M. Dusinska Dr J. Ezendam Dr E. Gaffet Prof. C. L. Galli Dr B. Granum Prof. E. Panteri (Rapporteur) Prof. V. Rogiers (SCCS Vice-Chair) Dr Ch. Rousselle Dr M. Stepnik Prof. T. Vanhaecke Dr S. Wijnhoven External experts: Dr A. Simonnard Dr A. Koutsodimou Prof. W. Uter The additional contribution of the following external expert is gratefully acknowledged: Dr. N. von Goetz All Declarations of Working Group members are available on the following webpage: http://ec.europa.eu/health/scientific_committees/experts/declarations/sccs_en.htm This Opinion has been subject to a commenting period of a minimum eight weeks after its initial publication (from 10 September until 14 November 2018). Comments received during this time were considered by the SCCS. For this Opinion, comments received resulted in the following main changes: sections 3.3.1.1. -
United States Patent (19) 11) Patent Number: 5,326,739 Tanabe Et Al
US005326739A United States Patent (19) 11) Patent Number: 5,326,739 Tanabe et al. 45) Date of Patent: Jul. 5, 1994 54 PROCESS FOR PRODUCING 3,5-DI(a-METHYLBENZYL)SALICYLIC FOREIGN PATENT DOCUMENTS ACID DERIVATIVE, AND USE OF 0218553 4/1987 European Pat. Off. ............ 503/210 POLY WALENT-METAL-MODIFIED 0219457 4/1987 European Pat. Off. ............ 503/210 PRODUCT THEREOF AS COLOR 0264051 4/1988 European Pat. Off. ............ 503/20 DEVELOPER 2696.19 7/1989 Fed. Rep. of Germany ...... 503/210 49-10856 3/1974 Japan ................................... 503/20 75) Inventors: Yoshimitsu Tanabe, Yokohama; 61-26772 5/1986 Japan ................................... 503/210 Keizaburo Yamaguchi, Chiba; 61-100493 5/1986 Japan ................................... 503/20 Akihiro Yamaguchi, Kamakura, all of 62-96449 5/1987 Japan ................................... 503/20 Japan 2-91042 9/1988 Japan ................................... 503/210 1-133780 9/1988 Japan ................................... 503/210 73 Assignee: Mitsui Toatsu Chemicals, 2-91043 3/1990 Japan ................................... 503/210 Incorporated, Tokyo, Japan OTHER PUBLICATIONS Appl. No.: 21 134,719 English Abstract of JP-A-2 091 042. 22 Filed: Oct. 12, 1993 Chemical Abstracts, vol. 93, Aug. 18, 1990, 93:7130h. Chemical Abstracts, vol. 79, No. 3, Jul. 23, 1973, Related U.S. Application Data 79:1830s. (62) Division of Ser. No. 740,386, Aug. 5, 1992, Pat. No. Primary Examiner-B. Hamilton Hess 5,274,150. Attorney, Agent, or Firm-Millen, White, Zelano & 30 Foreign Application Priority Data Branigan Aug. 6, 1990 (JP) Japan .................................. 2-2067.11 57 ABSTRACT 51) Int. Cl........................ B41M 5/035; B41M 5/38 A color-developing sheet using, as a color developer, 52) U.S.C. -
Spectra Library Index Ichem/SDBS Raman Library
Ichem / SDBS Raman スタンダードライブラリー 株式会社 エス・ティ・ジャパン S p e c t r a L i b r a r y I n d e x (Ver. 40) Ichem / SDBS Raman Library ライブラリー名:ラマンスタンダードライブラリー 商品番号:60001-40 株式会社 エス・ティ・ジャパン 〒103-0014 東京都中央区日本橋蛎殻町 1-14-10 Tel: 03-3666-2561 Fax:03-3666-2658 http://www.stjapan.co.jp 1 【販売代理店】(株)テクノサイエンス Tel:043-206-0155 Fax:043-206-0188 https://www.techno-lab-co.jp/ Ichem / SDBS Raman スタンダードライブラリー 株式会社 エス・ティ・ジャパン ((1,2-DIETHYLETHYLENE)BIS(P-PHENYLENE))DIACETATE ((2-(3-BENZYLSULFONYL-4-METHYLCYCLOHEXYL)PROPYL)SULFONYLMETHYL)BENZENE ((2,4,6-TRIOXOHEXAHYDRO-5-PYRIMIDINYL)IMINO)DIACETIC ACID ((2-CARBOXYETHYL)IMINO)DIACETIC ACID ((2-HYDROXYETHYL)IMINO)DIACETIC ACID ((2-NITROBENZYL)IMINO)DIACETIC ACID ((2-SULFOETHYL)IMINO)DIACETIC ACID ((3-(1-BROMO-1-METHYLETHYL)-7-OXO-1,3,5-CYCLOHEPTATRIEN-1-YL)OXY)DIFLUOROBORANE ((N-BENZYLOXYCARBONYL-L-ISOLEUCYL)-L-PROLYL-L-PHENYLALANYL)-N(OMEGA)-NITRO-L-ARGININE 4-NITROBENZYL ESTER (-)-2-AMINO-1-BUTANOL (-)-2-AMINO-6-MERCAPTOPURINE RIBOSIDE (-)-6,8-P-MENTHADIEN-2-OL (-)-DIACETYL-L-TARTARIC ACID (-)-DIBENZOYL-L-TARTARIC ACID (-)-DI-P-ANISOYL-L-TARTARIC ACID (-)-DI-P-TOLUOYL-L-TARTARIC ACID (-)-KAURENE (-)-MENTHOL (-)-MYRTENOL (-)-N,N,N',N'-TETRAMETHYL-D-TARTARDIAMIDE (-)-N,N'-DIBENZYL-D-TARTRAMIDE (+)-1,3,3-TRIMETHYLNORBORNANE-2-ONE (+)-2-(2,4,5,7-TETRANITRO-9-FLUORENYLIDENEAMINOOXY)PROPIONIC ACID (+)-2-AMINO-1-BUTANOL (+)-2-PINENE (+)-3,9-DIBROMOCAMPHOR (+)-3-CARENE (+)-5-BROMO-2'-DEOXYURIDINE (+)-AMMONIUM 3-BROMO-8-CAMPHORSULFONATE (+)-CAMPHOR (+)-CAMPHOR OXIME (+)-CAMPHORIC ACID (+)-CATECHIN (+)-DI-P-ANISOYL-D-TARTARIC -
Degradation Reference Materials 2017 Esterification
Degradation reference materials 2017 Esterification LGC Quality | ISO 9001 Certificate of Analysis — Example Welcome to LGCs degradation reference standards with focus on esterification products. Unwanted esters of Active Each impurity is accompanied by a Pharmaceutical Ingredients (APIs) detailed certificate of analysis, providing can be formed through a number of all the information you need to best use pathways, including transesterification, the reference material. Our products can carbonylation, addition of carboxylic be used with confidence during analytical acids and other mechanisms. research and development and validation studies as well as for stability monitoring LGC’s impurity reference standards and routine quality control purposes. are designed to be used at all relevant stages of the testing chain. They Visit our webshop lgcstandards.com allow the correct identification and quantification of any esters formed To find out more contact your during manufacturing or storage. Our local LGC office. impurities allow for an assessment of an API’s purity and can be used to help assess the product’s shelf life. LGC provides a range of esterification impurity reference standards for more than 130 major APIs. Certificate of Analysis — Example Certificate of Analysis Reference Standard (2S)-1-[(2S)-3-(Acetylsulfanyl)-2-methyl- propanoyl]pyrrolidine-2-carboxylic Acid Hydrate (Acetylcaptopril Hydrate) Catalogue Number: MM0067.05 Lot Number: 59066 Molecular Formula: C11H17NO4S H2O Long-term Storage: 2 to 8 °C, dark Molecular Weight: 277.34 CAS Number: [ 801293-45-8 ] Appearance: white solid Melting Point: 81 °C Assay ‘as is’: 99.3 % Date of shipment: 2017-July-21 This certificate is valid for two years from the date of shipment provided the substance is stored under the recommended conditions. -
Salicylic Acid Derivative, and Use of Polyvalent-Metal-Modified Product
Europaisches Patentamt (19) European Patent Office Office europeenopeen des brevets (1 } E P 0 470 5 1 6 B 1 (12) EUROPEAN PATENT SPECIFICATION (45) Date of publication and mention (51) intci.6: C07C 51/347, C07C 69/94, of the grant of the patent: B41M 5/155, B41M 5/30, 06.03.1996 Bulletin 1996/10 C07C 65/105, C07C 67/343, G03C 7/00 (21) Application number: 91113010.2 (22) Date of filing: 02.08.1991 (54) Process for producing 3,5-di(alpha-methylbenzyl)salicylic acid derivative, and use of polyvalent-metal-modified product thereof as color developer Verfahren zur Herstellung eines Derivats von 3,5-Di(alpha-methylbenzyl)salicylsaure und Verwendung eines mit mehrwertigem Metall modifizierten Produktes davon als Farbentwickler Procede pour la fabrication d'un derive de I'acide 3,5-di(alpha-methylbenzyl)salicylique et utilisation d'un produit de celui-ci modifie par un metal polyvalent comme developpeur de couleur (84) Designated Contracting States: (74) Representative: Schiiler, Horst, Dr. BE CH DE ES FR GB IT LI Patentanwalt, Kaiserstrasse 69 (30) Priority: 06.08.1990 JP 206711/90 D-60329 Frankfurt (DE) (43) Date of publication of application: (56) References cited: 12.02.1992 Bulletin 1992/07 EP-A- 0 218 553 EP-A- 0 219 457 EP-A- 0 264 051 DD-A- 269 619 (73) Proprietor: MITSUI TOATSU CHEMICALS, Inc. Chiyoda-Ku Tokyo 100 (JP) • CHEMICAL ABSTRACTS, vol. 79, 1973, Columbus, Ohio, US; abstract no. 18310s (72) Inventors: • CHEMICAL ABSTRACTS, vol. 93, 1980, • Tanabe, Yoshimitsu Columbus, Ohio, US; abstract no. 71304h; & Yokohama-shi, Kanagawa-ken (JP) JP-A-54 160 335 & JP-B-61 026 772 • Yamaguchi, Keizaburo Chiba-ken (JP) Remarks: • Yamaguchi, Akihiro The file contains technical information submitted Kanagawa-ken (JP) after the application was filed and not included in this specification DO CO lO o Is- ^- Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give o notice to the European Patent Office of opposition to the European patent granted. -
WO 2013/020527 Al 14 February 2013 (14.02.2013) P O P C T
(12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (10) International Publication Number (43) International Publication Date WO 2013/020527 Al 14 February 2013 (14.02.2013) P O P C T (51) International Patent Classification: (74) Common Representative: UNIVERSITY OF VETER¬ A61K 9/06 (2006.01) A61K 47/32 (2006.01) INARY AND PHARMACEUTICAL SCIENCES A61K 9/14 (2006.01) A61K 47/38 (2006.01) BRNO FACULTY OF PHARMACY; University of A61K 47/10 (2006.01) A61K 9/00 (2006.01) Veterinary and Pharmaceutical Sciences Brno Faculty Of A61K 47/18 (2006.01) Pharmacy, Palackeho 1/3, CZ-61242 Brno (CZ). (21) International Application Number: (81) Designated States (unless otherwise indicated, for every PCT/CZ20 12/000073 kind of national protection available): AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, (22) Date: International Filing BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, 2 August 2012 (02.08.2012) DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, (25) Filing Language: English HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, (26) Publication Language: English ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, (30) Priority Data: NO, NZ, OM, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, 201 1-495 11 August 201 1 ( 11.08.201 1) SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, 2012- 72 1 February 2012 (01.02.2012) TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, 2012-5 11 26 July 2012 (26.07.2012) ZW. -
Stembook 2018.Pdf
The use of stems in the selection of International Nonproprietary Names (INN) for pharmaceutical substances FORMER DOCUMENT NUMBER: WHO/PHARM S/NOM 15 WHO/EMP/RHT/TSN/2018.1 © World Health Organization 2018 Some rights reserved. This work is available under the Creative Commons Attribution-NonCommercial-ShareAlike 3.0 IGO licence (CC BY-NC-SA 3.0 IGO; https://creativecommons.org/licenses/by-nc-sa/3.0/igo). Under the terms of this licence, you may copy, redistribute and adapt the work for non-commercial purposes, provided the work is appropriately cited, as indicated below. In any use of this work, there should be no suggestion that WHO endorses any specific organization, products or services. The use of the WHO logo is not permitted. If you adapt the work, then you must license your work under the same or equivalent Creative Commons licence. If you create a translation of this work, you should add the following disclaimer along with the suggested citation: “This translation was not created by the World Health Organization (WHO). WHO is not responsible for the content or accuracy of this translation. The original English edition shall be the binding and authentic edition”. Any mediation relating to disputes arising under the licence shall be conducted in accordance with the mediation rules of the World Intellectual Property Organization. Suggested citation. The use of stems in the selection of International Nonproprietary Names (INN) for pharmaceutical substances. Geneva: World Health Organization; 2018 (WHO/EMP/RHT/TSN/2018.1). Licence: CC BY-NC-SA 3.0 IGO. Cataloguing-in-Publication (CIP) data. -
Studies of Nitrogen Heterocyclics of Potential Pharmacological Interest
STUDIES OF NITROGEN HETEROCYCLICS OF POTENTIAL PHARMACOLOGICAL INTEREST THESIS SUBMITTED TO THE ALIGARH MUSLIM UNIVERSITY FOR THE DEGREE OP DOCTOR OF PHILOSOPHY IN CHEMISTRY B V AHMED KAMAL M. Sc .• M. Phil REGIONAL RESEARCH LABORATORY HYDERABAD 1982 T2510 CERTIFICATE The iVOAk Ivi tl%a, tkuli, kca, been aafifUzd ouut by M/l Ahmed Kmal. I cqaX1{iLJ that it kU bona^-lde ivo^k and -li ofiiQ-ivial. It hcu, not bznn submitted ^oA uny othoA cfeg/'Lee o^ thli, on othoA UiUveA6ttlz6. SATTUK} SZgnatuA& oi the. Guide. Regional RueoAch LaboAcutoAy (} Hyderabad 500 009 Ind^ GH^m^S riwwartn)'"':: ^f Chemistty Ulil'U, . n >Jai\f. ,:iy a;, -t-H. ACKNOWLEDGMENT The research work recorded in this thesis was carried out under the supervision of Dr P B Sattur, Deputy Director, Regional Research Laboratory, Hyderabad. I am indebted to him for his keen interest and valuable guidance. I am grateful to Dr G Thyagarajan, Director, Regional Research Laboratory, Hyderabad, for providing all facilities to carry out the work presented in this thesis and also to Council of Scientific and Industrial Research, New Delhi, for the award of a Research Fellowship. I am thankful to Prof W Rahman, Head, Department of Chemistry, Aligarh Muslim University, Aligarh, for helpful discussions. I wish to express my thanks to the analytical section of the Regional Research Laboratory, for carrying out microanalyses and recording of UV, IR, NMR and Mass spectra. Thanks are due to M/s. Lonza & Sandoz, Switzerland, for the supply of Chlorosulfonyl isocyanate and aminobenzophenones as gift samples. t The work in this thesis is original and has not been submitted, for any other degree of this or other Universities.