https://probes.bocsci.com/product/af594-activated-ester-5-isomer-cas-1638544-48-5-77268.html
CAS 1638544-48-5 (AF594 activated ester, 5-isomer) - Probes / BOC Sciences
AF594 is a bright water-soluble dye that is not sensitive to pH changes within the range from 4 to 10.
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