| pentamethylene | <chemistry> A hypothetical hydrocarbon, C5H10, metameric with the amylenes, and the nucleus of a large number of derivatives; so named because regarded as composed of five methylene residues. Cf. Trimethylene, and Tetramethylene. Origin: Penta- + methylene. Source: Websters Dictionary (01 Mar 1998) |
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| pentamethylenediamine |
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| pentamethylene | a drug used as a circulatory and respiratory stimulant |
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