Search Google patents to look up a patent number.
Use SciFinder-n to search for chemical patents by subject or inventor.
Search for chemistry and chemical engineering literature, patents, chemical substances and reactions. SciFinder also includes MethodsNow (synthetic protocols), a predictive retrosynthesis planner, PatentPak patent mapping tool, and NMR spectra content. (1907 - date, with selected coverage back to 1878).
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