Abstract:
:Samples of ethacrynic acid were treated with methanol-hydrochloric acid or with diazomethane. GLC and mass spectrometric analysis indicated that the methanol-hydrochloric acid reaction gave the expected methyl ester, whereas diazomethane treatment gave a compound containing an additional 14 mass units. Accurate mass measurement and PMR and IR spectra showed that this product was a cyclic derivative of the methyl ester of ethacrynic acid, methyl 4-(2,3-dihydro-4-ethyl-5-furyl)-2,3-dichlorophenoxyacetate. Either derivatization method can be used for development of an assay for ethacrynic acid.
journal_name
J Pharm Scijournal_title
Journal of pharmaceutical sciencesauthors
Midha KK,Hubbard JW,Charette C,Jun HWdoi
10.1002/jps.2600670728subject
Has Abstractpub_date
1978-07-01 00:00:00pages
975-8issue
7eissn
0022-3549issn
1520-6017pii
S0022-3549(15)42114-8journal_volume
67pub_type
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