5.1.1.17	deacetoxycephalosporin C	less than 1% of activity with penicillin N	Streptomyces clavuligerus	?	-	?	323503	
5.1.1.17	isopenicillin	-	Amycolatopsis lactamdurans	penicillin N	-	?	323502	
5.1.1.17	isopenicillin	-	Amycolatopsis lactamdurans	penicillin N	-	r	323502	
5.1.1.17	isopenicillin	-	Streptomyces microflavus	penicillin N	-	?	323502	
5.1.1.17	isopenicillin	-	Acremonium chrysogenum	penicillin N	-	?	323502	
5.1.1.17	isopenicillin	-	Streptomyces clavuligerus	penicillin N	-	?	323502	
5.1.1.17	isopenicillin	-	Streptomyces clavuligerus	penicillin N	-	r	323502	
5.1.1.17	isopenicillin	-	Acremonium chrysogenum C10 / ATCC 48272	penicillin N	-	?	323502	
5.1.1.17	isopenicillin N	-	Amycolatopsis lactamdurans	penicillin N	-	?	370405	
5.1.1.17	isopenicillin N	-	Streptomyces microflavus	penicillin N	-	?	370405