Module 8 Presentation

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Slide1: 

Information Literacy Program Module 8

Module 8: 

Using Chemical Abstracts Module 8

Learning Objective: 

to teach students how to use Chemical Abstracts Learning Objective

Learning Outcomes: 

At the end of this session, students should be able to: use the appropriate guides and indexes to find relevant documents understand and follow the rules of the Hill system Learning Outcomes

Overview of Chemical Abstracts: 

published since 1907 available in print and electronic form weekly with 6-monthly cumulations has referenced ~ 20,000,000 items & indexed > 35 million chemicals adds ~ 750,000 citations per year reviews ~ 10,000 journals per year Overview of Chemical Abstracts

Indexes and Guides: 

Author Index (A) General Subject Index (GS) Chemical Substance Index (CS) Formula Index (F) Patent Index (P) + Index to Ring Systems + Index Guide and handbooks Indexes and Guides

Slide7: 

General concepts Substance names Ring structures Registry numbers Molecular formulae Author names Patent numbers Index Guide Index of Ring Systems Ring Systems Handbook Registry Handbook Author Index Patent Index General Subject Index Chemical Substance Index Formula Index Chemical Abstracts Chemical Abstracts Chemical Abstracts Chemical Abstracts Chemical Abstracts Entry Points and Search Paths

Slide8: 

General concepts Substance names Ring structures Registry numbers Molecular formulae Author names Patent numbers Index Guide Index of Ring Systems Ring Systems Handbook Registry Handbook Author Index Patent Index General Subject Index Chemical Substance Index Formula Index Chemical Abstracts Chemical Abstracts Chemical Abstracts Chemical Abstracts Chemical Abstracts Searching by Author or Patent

Author Index Characteristics: 

alphabetical by family name and initials only (NOT full first name) letter-by-letter filing (so ignore spaces) many see references to first-named authors corporate names are also included Author Index Characteristics

Patent Index Characteristics: 

numerical by patent notation of country 2-letter country codes (WO=world patent) “families” of related or equivalent patents are grouped & linked by see references Patent Index Characteristics

Subject Searching: 

Start with the Index Guide to find: preferred terms for concepts or chemicals, as many have multiple names (synonyms) see references from unused terms see also references linking related terms explanatory notes (on history or policy of terms) CAS Registry Numbers (unique identifiers) illustrative keys to each index (Appendix II) nomenclature rules (Appendix IV) Subject Searching

Example of Illustrative Key: 

Example of Illustrative Key

Slide13: 

General concepts Substance names Ring structures Registry numbers Molecular formulae Author names Patent numbers Index Guide Index of Ring Systems Ring Systems Handbook Registry Handbook Author Index Patent Index General Subject Index Chemical Substance Index Formula Index Chemical Abstracts Chemical Abstracts Chemical Abstracts Chemical Abstracts Chemical Abstracts Searching by General Subject

General Subject Search: Step 1: 

Plasma Ionized-gas plasmas are indexed at this heading. Plasma of the blood is indexed at Blood plasma. accelerators for – see Accelerators, plasma app. for – see Electric discharge devices Electron sources, discharge coating or film deposition by see Anodization, plasma Coating process, plasma Epitaxy Preferred terms Your terms General Subject Search: Step 1 Check your search term in the Index Guide: (e.g. plasma coating techniques)

General Subject Search: Step 2: 

Look up preferred terms in GS or CS index: Coating process ablation laser-induced, with barium titanate, properties and crystal orientation in relation to, 179459v : plasma activation and degreasing of metallic surfaces prior to, R 25682a with alumina, of positronic components, 814795x Beaufort, on ceramic surfaces, 8765k with transition metals, of alloys, metals, fibers, glasses and polymers, P 219715j Abstract numbers Base term Subdivision Prefix letter (B = book, P = patent, R= review) Descriptions General Subject Search: Step 2

General Subject Search: Step 3: 

Locate abstract in the appropriate volume: 116: 814795x Properties of plasma coating of positronic components using alumina. Asimov, I.; Calvin, S. (Rob. Eng. Dept., M.I.T.) J. of Ind. Manuf. 1992, 41(3), 237-251 (Eng). Alumina plasma deposition on fine (<500µ) filaments used in positronic components of industrial robotics manufacture is… Abstract no. Volume no. Title Authors Institute where research was conducted Publication Year Published Volume (issue), page nos. Language of publication General Subject Search: Step 3

Decoding Journal Title Abbreviations: 

Materials are available at the Information Desk to assist you in decoding the abbreviations to the journal titles Ulrich’s Periodicals Directory Periodical Title Abbreviations: By Abbreviations Decoding Journal Title Abbreviations

Structure of Abstracts: 

116: 219715j Plasma metalizing of polymers, glasses, metals and alloys, and fibers. Goudmand, Pierre; Dessaux, Odile; ben Taleb, Abdellah; Cannesson, Catherine (Plasmametal) DE 4,122,229 (Cl. C23C16/16), 09 Jan 1992, FR Appl. 90/8,602, 06 Jul 1990; 7 pp. N and or inert gas (Ar) plasma is formed in a plasma tube, which is connected to a deposition chamber contg. The coating part(s) and being supplied with vapor(s) of transition metal carbonyls(s)… Vol. no. Title Inventors Patent number & classification Patent date Equivalent patent application details Assignee Number of pages Check letter Details may vary according to type of entry: Structure of Abstracts

Slide19: 

General concepts Substance names Ring structures Registry numbers Molecular formulae Author names Patent numbers Index Guide Index of Ring Systems Ring Systems Handbook Registry Handbook Author Index Patent Index General Subject Index Chemical Substance Index Formula Index Chemical Abstracts Chemical Abstracts Chemical Abstracts Chemical Abstracts Chemical Abstracts Searching by Chemical Name

Chemical Name Search: Step 1: 

Aspiration (inhalation) See Breathing (animal), inhalation Aspirin See Benzoic acid, 2-(acetyloxy)- [50-78-2] Aspirina 03 See Benzoic acid, 2-(acetyloxy)- [50-78-2] Preferred term Your term Check your search term in the Index Guide: (e.g. can aspirin help prevent strokes?) CAS Registry number Preferred terms for chemical substances are based upon the nomenclature rules of the International Union of Pure and Applied Chemistry (IUPAC). Chemical Name Search: Step 1

Chemical Name Search: Step 2: 

Scan entries under your preferred term in the Chemical Substance Index: Benzoic acid, 2-(acetyloxy)- [50-78-2] absorption of enteric-coated, in humans, food effect on, gastric residence time in relation to, 113151a : stress resistance in crop plants in relation to phenolic compds., 223077b stroke prevention with dipyridamole and acetylsalicylic acid in secondary prevention of stroke in humans, 112960q subacute toxicity of mixt. of chems. in rats, 208327q Abstract number Chemical Name Search: Step 2

Chemical Substance Index: 1: 

Chemical Substance Index: 1 Entries follow a basic pattern: Parent = structural skeleton Substituent = a group replacing part of a parent structure Subdivision = modification, qualifier, category or formula Commas invert substance entries (like names in the Author Index) to keep similar chemicals together in the index Benzoic acid, 2-(acetyloxy)- [50-78-2] e.g. Parent , substituent Registry no. Parent, substituent or subdivision

Chemical Substance Index: 2: 

Parent entries are basically alphabetical, letter-by-(Roman) letter -- ignore all numbers, spaces, punctuation Initial locants then apply (italic, Greek, Arabic, in that order) e.g. l-, m- , n- before -, -, - before 1-, 2-, 3-… All other locants then apply, e.g. 2-Butene-1,4-diamine Definitions or line formula (in parentheses) may also occur, e.g. Bromine fluoride (BrF3) vs. Bromine fluoride (BrF5) Sorting by substituents then applies, by the same rules as for parent entries until these are exhausted. Then spaces and punctuation are considered Chemical Substance Index: 2

Chemical Substance Index: 3: 

Chemical Substance Index: 3 Finally, heading subdivisions are used for various reasons: modifications (identifying derivatives, e.g. an ester) stereochemical descriptors qualifiers (e.g. analysis, preparation, properties, uses) categories (e.g. compounds, derivatives)  Beware! Multiple sequences of alphabetical subdivisions under the substance heading can occur as a result! Full ordering keys to both General Subject and Chemical Substance Indexes appear at section 10C of Appendix II

Chemical Name Search: Step 3: 

Locate the abstract as before: Remember, abstracts file numerically – ignore prefixes Chemical Name Search: Step 3

Slide26: 

General concepts Substance names Ring structures Registry numbers Molecular formulae Author names Patent numbers Index Guide Index of Ring Systems Ring Systems Handbook Registry Handbook Author Index Patent Index General Subject Index Chemical Substance Index Formula Index Chemical Abstracts Chemical Abstracts Chemical Abstracts Chemical Abstracts Chemical Abstracts Searching by Chemical Formula

Chemical Formula Search: Step 1: 

Use the Formula Index to find the name: C9H11 Ethyl, 1-methyl-1-phenyl- [4794-07-4], 20065a, 185216p, 201017g, 294583b C9H11AsS2 1,3,2-Dithiarsenane, 2-phenyl- [55883-62-0], 58764r C9H11BBr2 Borane, dibromo[4-(1-methyethyl)phenyl]- [76782-91-7], 385193r Abstract number Formula Name CAS Registry Number Chemical Formula Search: Step 1

Formula Index Characteristics: 

Formula Index Characteristics Formula entries follow the Hill System: Entries are basically alphabetical by chemical symbol. (e.g. salt = ClNa NOT NaCl) For organic compounds, C and H are considered first and the quantity of C and H atoms establishes the index order: CH CHx CH2x CH3x C2Hx C2H2x (etc.) C9H10T2 Benzene, propyl-2,3-t2- [445468-92-8], … C9H11 Ethyl, 1-methyl-1-phenyl- [4794-07-4], … C9H11AsS2 1,3,2-Dithiarsenane, 2-phenyl- [55883-62-0], … C9H11BBr2

Ring Systems Index & Handbook: 

Use the Index of Ring Systems if you know: number of rings (eg. 2) size of rings (eg. 4,5) composition (eg. C3N-C4N) The same information is used to order entries in the index, which again gives chemical names 2-RING SYSTEMS 4,5 C3N-C4N 1-Azabicyclo[3.2.0]heptane C3N-C4O The Ring Systems Handbook is an alternative access route to chemical names based on structure drawings Ring Systems Index & Handbook

Chemical Formula Search: Step 2: 

Chemical Formula Search: Step 2 Search the Chemical Substance Index using the name for your formula: 1,3,2-Dithiarsenane [6569-56-8] S AsH S ---, 2-[(1Z)-2-chloroethenyl]- [439669-99-5] analysis of six dithiarsenane derivatives by…69183s ---, 2-phenyl- [55883-62-0] quantitation of chlorovinylarsonous acid in human urine by automated solid-phase microextn.-gas chromotog.-mass spectrometry, 58764r 1,3,2-Dithiarsolane [6007-38-1] Same abstract no. Abstract no. for similar chemical Structural diagrams

Chemical Formula Search: Step 3: 

Locate the abstract as before. (2002 abstract: note journal titles no longer abbreviated) Chemical Formula Search: Step 3

Final Advice : 

Final Advice familiarise yourself with the set of Chemical Abstracts indexes study the Index Guide, especially note the Ordering Keys and Illustrative Keys to entries in each index (in Appendix II) Practice!

Information Literacy at the USP Library: 

This presentation is available at http://www.usp.ac.fj/library (under Services) as part of the USP Library’s Information Literacy Program Information Literacy at the USP Library

Other ILP Modules: 

Other ILP Modules Module 1: Resources available @ the USP Library Module 2: Accessing the USP Library Website & Using the Online Catalogue Module 3: Untangle the Web Module 4: Critically Evaluating Information Sources Module 5: Literature Search, Citing Sources & the Bibliography Module 6: Searching ProQuest Module 7: Searching ISI Module 8: Using Chemical Abstracts © USP Library, April 2007

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