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indexSearching the Standardized Molecular Formula FieldSearches the Standardized Molecular Formula field within the Derwent Chemistry Resource database. Enter one or more formulas connected with search operators. You can enter complete formulas or partial formulas using wildcards. indexAbout Standardized Molecular FormulaThe Standardized Molecular Formula is based on the molecular formula of the compound and, in most cases, is used simply to indicate the ratios of the different fragments. It consists of several molecular formula fragments. The number of occurrences of each fragment is shown, delimited by the * character. Note the following principles:
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indexSearch Examples
indexSearch TipIf you have trouble searching for standardized molecular formulas, try using quotation marks ("") to enclose the search query. This is required if the formula contains special characters. For example: "c10 h15 n o *1"returns over 70 results. On the other hand: c10 h15 n o *1 returns no results because of the asterisk (*) character in the formula. |