index
indexCompound SearchSearch the Derwent Chemistry Resource database for compound structures. All successful searches are added to the Search History table. You can use the following Boolean Operators in all text fields: AND, OR, NOT. There are three ways you can search for patent records related to compounds:
indexText Field Search1. Enter your search terms in one or more search fields.
2. Click the Search button to go to the Compound Results page. indexStructure Details Search
indexStructure Details and Text Field Search
indexStructure Detail OptionsSubstructureThis option finds molecule records that contain the chemical structure drawn as a substructure within a larger structure. indexCurrent Molecular TypeExact: Finds compounds that match the chemical structure exactly. Isomer: Finds compounds that are geometric isomers and stereoisomers of the drawn chemical structure Tautomer: Finds compounds that are tautomers of the drawn chemical structure Relaxed Match: Derwent-invented term that is defined as a flexmatch search with no parameters set. In the same way that an isomer search is an exact match that ignores stereochemistry, the relaxed search is an exact match that ignores stereochemistry, hydrogen count, tautomerism, extra salt fragments, isotopes, etc. (that is, the loosest possible current molecule search). indexSimilarityA measure of how closely retrieved molecules resemble the drawn chemical structure. The degree of similarity can be defined by selecting values between 0 and 100. The higher the value, the more similarity. Default values are Min 80 and Max 100. You can also specify that the retrieved records contain the same structural complexity as the drawn structure (Normal), more complexity than the drawn structure (Sub), or less complexity than the drawn structure (Super). |