Sub Group: Unlabeled Standards Catalog Number: 5138 CAS Number: 98753-19-6 Molecular Weight: 612.66 Synonyms: (1-[[(6R,7R)-7-[[(2Z)-(2-Amino-4-thiazolyl)(methoxyimino)acetyl]amino]-2-carboxy-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-en-3-yl]methyl]-6,7-dihydr