Structure
The term "penam" is used to describe the core skeleton of a member of the penicillin antibiotics. This skeleton has the molecular formula R-C9H11N2O4S, where R is a variable side chain.
Normal penicillin has a molecular weight of 313 to 334 g/mol (latter for penicillin G). Penicillin types with additional molecular groups attached may have a molar mass around 500 g/mol. For example, cloxacillin has a molar mass of 476 g/mol and dicloxacillin has a molar mass of 492 g/mol.
Read more about this topic: Penicillin
Famous quotes containing the word structure:
“The philosopher believes that the value of his philosophy lies in its totality, in its structure: posterity discovers it in the stones with which he built and with which other structures are subsequently built that are frequently better—and so, in the fact that that structure can be demolished and yet still possess value as material.”
—Friedrich Nietzsche (1844–1900)
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The great structure has become a minor house.
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The greenhouse never so badly needed paint.”
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