C-2801X

Antibiotic C-2801X

3'-Hydroxycephamycin B

(7S)-7-[[(R)-5-Amino-5-carboxy-1-oxopentyl]amino]-3-[[[3-(3,4-dihydroxyphenyl)-2-methoxy-1-oxo-2-propenyl]oxy]methyl]-7-methoxycepham-3-ene-4-carboxylic acid

(6R,7S)-7α-[[(R)-5-Amino-5-carboxy-1-oxopentyl]amino]-3-[[[3-(3,4-dihydroxyphenyl)-2-methoxy-1-oxo-2-propenyl]oxy]methyl]-7-methoxy-8-oxo-5-thia-1-azabicyclo[4.2.0]octa-2-ene-2-carboxylic acid