This invention relates to two new antibiotics, desacetyl 890A1 and desacetyl 890A3, active against both gram positive and gram negative bacteria, which are produced by treating 890A1 and 890A3, respectively, with an N acetylthienamycin amidohydrolase produced by {HEAD ~ a soil microorganism} isolated by {TAIL ~ enrichment techniques} 
isolated by
This invention relates to two new antibiotics , desacetyl 890A1 and desacetyl 890A3 , active against both gram positive and gram negative bacteria , which are produced by treating 890A1 and 890A3 , respectively , with an N acetylthienamycin amidohydrolase produced by { HEAD ~ a soil microorganism } isolated by { TAIL ~ enrichment techniques }
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