Ester methyl penicilloate

The treatment of penicillin with methanol yields the eorresponding ester methyl penicilloate whieh, on hydrolysis with aqueous mereurie ehloride, gives methyl penaldate and penicillamine. Thus... 

Penicillin V—see Penicillin, phenoxymethyl-, 7, 300 Penicilloate, benzyl-, 7, 303 Penicilloate, D-a-benzyl-a-methyl ester, 7, 303 Penillamine, benzyl-, 7, 303 Penillic acid, benzyl-, 7, 303 Penilloaldehyde, benzyl-, 7, 303 Penilloic acid, benzyl-, 7, 303 Penillonic acid, benzyl-methyl ester, 7, 303 1,2,3,4,6-Pentaazaindene nomenclature, 1, 18 Pentadeca-5,10-dienols synthesis, 1, 428 Pentadienol, tetrachloro-2H-pyran synthesis from, 3, 740 Pentadienonitrile, 5-(l,2-benzoselenazol-3-yl)-X-ray diffraction, 6, 334 Penta-2,4-dienonitrile, 5-(dimethylamino)-2-(2-thienyl)-... 

Separation of eight penicillins by paper and thin layer chromatography was described by Hellberg 3. Thin-layer methods are described for the intact penicillins and the methyl esters of the penicilloic acids. 

FIG. 5. Cl mass spectral fragmentations of penicillin and penicilloic acid methyl esters. 

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