Compound ID | 421
Class: Lipopeptide
| Spectrum of activity: | Gram-negative |
| Institute where first reported: | Eli Lilly, US |
| Year first mentioned: | 1988 |
| Highest developmental phase: | Preclinical |
| Development status: | Inactive |
| Reason Dropped: | Transient resistance build up through passing Streptococcus sp. 7 times at sublethal concentrations and demonstrates acute mouse toxicity (ICAAC 1988, no.971). |