| cephalexin | <drug> A semisynthetic cephalosporin antibiotic with antimicrobial activity similar to that of cephaloridine or cephalothin, but somewhat less potent. It is effective against both gram-positive and gram-negative organisms. Pharmacological action: cephalosporins. Chemical name: 5-Thia-1-azabicyclo(4.2.0)oct-2-ene-2-carboxylic acid, 7-((aminophenylacetyl)amino)-3-methyl-8-oxo-, (6R-(6alpha,7beta(R*)))- (12 Dec 1998) |
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| methylol | Hydroxymethyl; the radical, -CH2OH. (05 Mar 2000) |
| methylol riboflavin | A mixture of methylol derivatives of riboflavin formed by the action of formaldehyde on riboflavin in weakly alkaline solution; it has the same action as riboflavin, but is preferred for parenteral administration. (05 Mar 2000) |