Shelf life (days): 730.0
Formulation: A crystalline solid
Formal Name: (6R)-3-[(1E)-2-(2,4-dinitrophenyl)ethenyl]-8-oxo-7R-[(2-thienylacetyl)amino]-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid
Purity: ≥90%
Formula Markup: C21H16N4O8S2
Formula Weight: 516.5
CAS Number: 41906-86-9
Notes: The generation of β-lactamases by bacteria affords resistance to several classes of β-lactam antibiotics, including penicillins and cephalosporins.{25960} Nitrocefin is a chromogenic cephalosporin substrate commonly used to detect β-lactamases in bacteria.{25959,25958,25957} The presence of β-lactamase activity is indicated by the appearance of a red color that is proportional in intensity to the original concentration of nitrocefin.{25959}