Alexa Fluor 488 carboxylic acid  Cas: 1027930-57-9 | 95%+ |Kirkpeptide,.Ltd

Product Name     Alexa Fluor 488 carboxylic acid

Appearance: orange crystals

CAS: 1027930-57-9

Molecular weight: 531.5

Molecular formula: C21H11N2O11S2

IUPAC name: 4-(6-amino-3-iminio-4,5-disulfonato-3H-xanthen-9-yl)isophthalate

Solubility: good in DMSO, DMF

Quality control: NMR 1H, HPLC-MS (95%)

Storage conditions: Storage: 12 months after receival at -20°C in the dark. Transportation: at room temperature for up to 3 weeks. Avoid

prolonged exposure to light.

Spectral properties

Excitation/absorption maximum, nm: 495

ε, L⋅mol−1⋅cm−1: 71800

Emission maximum, nm: 519

Fluorescence quantum yield: 0.91

CF260: 0.16

CF280: 0.10