Combined Chemical Dictionary Guide

Combined Chemical Dictionary

Description
Structure Search
Text and Data Search
View Search Results
Print and Save Search Results
Exit

Description

Covers the 500,000 compounds in the latest editions of Chapman and Hall's Dictionary of Analytical Reagents, Dictionary of Carbohydrates, Dictionary of Inorganic and Organometallic Compounds, Dictionary of Natural Products, Dictionary of Organic Compounds, and Dictionary of Pharmacological Agents. Information provided for each compound includes its systematic and common names; structure diagrams; chemical, physical and biological properties; and key literature references. The database's plug-in software enables searching structures graphically.

Structure Search

From the Main Search Screen, click the button to display the Structure Drawing Screen.

(Your computer has not installed the required plugin if the button is not available. There are two ways to do the installation : 1. Click

at the top of the Main Search Screen and do the installation yourself. 2. Access the database via the database's entry on the Library's database listings on our Web server, and use the plug-in link available there.

Use the tools on the left of the Structure Drawing Screen to draw chemical structures

Pencil Tool - for drawing or changing atoms and bonds.

Click on the tool
Carbon and single bond are the default atom and bond. Click Draw at the top of the screen and then select the desired atom, shortcut, variable, or bond.
On the drawing screen, click on a point where you want the atom to appear
To draw a bond between two atoms:
-Click on the first atom
-Hold and drag the mouse so that the pencil cursor moves from the first atom to the second atom
-Release the mouse
You can modify an existing atom or bond by selecting a new atom or bond and then click on the existing atom or bond.

Ring Tool - for drawing 3-15 membered carbon rings

Click on the tool
Select a ring size
On the drawing screen, click on a point where you want the ring to appear

Chain Tool - for drawing carbon chains of 1-30 nodes

Click on the tool
Select a chain length
On the drawing screen, click on a point where you want the chain to appear

Eraser Tool - for erasing atoms and bonds

Click on the tool
Click on the bond or the atom that you want to erase

After finished drawing the structure, click

to transfer it to the Main Search Screen.

Choose Exact Match or Substructure search.

You can carry out a Structure Search on its own, or in combination (AND, OR, NOT) with a Text and Data Search.

Click at the top left of the Main Search Screen to start searching.

Text and Data Search

See Table I below for a list of the searchable fields, their descriptions, as well as examples of search terms.

You can use * to represent any number of characters, link search terms using boolean operators (AND, OR, NOT), and use range operators (e.g., <= ) when you are searching for numerical data.

Truncation: End a word with "*" to search all possible endings.<.dd>; e.g., quin* - finds records containing quinidine, quinine, quinoline, quinoxaline, quintiofos, etc.
Boolean Operators: Use AND to narrow a search by combining concepts
e.g., acetylating and amines
Use OR to broaden a search by connecting synonyms.
e.g., synthesis or preparation; Use NOT to eliminate the second term.
e.g., synthesis not oxidation
Range Operators: Use >to find records with data greater thana certain number in a chosen field.
e.g., >80 in the boiling point fieldfinds chemicals with a boiling point higher than 80 C.; Use >= to find records with data greater than or equal to a certain number in a chosen field.; Use < to find records with data less than a certain number in a chosen field.; Use <= to find records less than or equal to a certain number in a chosen field.; Use - to find data with a certain range in a chosen field
e.g., 1-1.2 in the density field will find chemicals with a density between 1 and 1.2

Enter a term directly into the box on the right of the desired search field, or preferably transfer the term from the Index via the following steps:

Click the button on the right of the box
Follow the instructions on the screen and finally click to transfer the term to the box

Where appropriate, use truncation or operator(s) to refine your search.

Continue to enter terms into other boxes if you want to search multiple fields. Click the down arrows on the left of the fields and select the relationships (AND, OR, NOT) between the fields. The default is AND.

You can carry out a Text and Data search on its own, or in combination (AND, OR, NOT) with a Structure Search.

Click at the top left of the Main Search Screen to start searching.

Table I. Searchable Fields

Field	Description	Example
All Text	Words from the text of these fields: Physical Description, Hazards and Toxicity, Source/Synthesis, Use/Importance, and General Statement	catalysts
Boiling Point	Expressed in degrees Celsius. It is range searchable	80
Boiling Point Pressure	Expressed in mmHg. It is range searchable.	4.5
CAS Registry Number	Chemical Abstracts Services Registry Number	212384
Chemical Name	All chemical names and synonyms	tricholoroacetic acid
Density	Relative density ( liquids only). It is range searchable.	0.65
Dictionary Subset	Restricts the search to one of the six dictionaries in the database.	F
Dissociation Constant	Expressed in the form of pKa. It is range searchable.	3.4
Hazard and Toxicity	Contains data on reactive, physical and toxicological hazards, including LD50 values and flash point data.	LD50
Hazard Flag	Indicates if there is hazard information related to the compound. Type Y (Yes) or N (No) into this field.	Y
Ion Charge	Charge of the compound	-2
Melting Point	Expressed in degrees Celsius.	140
Molecular Formula	In Hill Order. Capitals and lower cases must be used correctly. e.g., Pb is correct; pb, PB, or pB are wrong.	C5H12AuF3IP
Molecular Weight	Is range searchable.	11.028
Optical Rotation	Optical rotation value	-1424
Partition Coefficient	Calculated octanol-water partition coefficients for pharmacological agents. It is range searchable.	8.68
RTEC Accession Number	Registry of Toxic Effects of Chemical Substances Accession Number	NC3850000
Type of Compound	Types of compound codes	AF1200
Type of Compound Words	Contains individual words from the text associated with the Type of Compound classification	glycopeptides

View Search Results

A maximum of 10 hits will be displayed on each page. Click , , , or to move from one page of hits to another.

Click on the name of the desired compound to display the full entry. Click to display the structure. Click , , , or to move between entries.

To move from a full entry back to the hit list, click .

Print and Save Search Results

To print or save a page of hits while viewing it, click and then print or save as usual using your browser's function keys

To print or save a full entry while viewing it, click and then print or save as usual using your browser's function keys.< /p>

Exit The Database

Click at the top right of the Main Search Screen.