Table 2. Parameters of Interest for FRET-Based Small-Molecule Fluorescent pH Probes.

probe	MW	λex (nm)(pH)	λem (nm)(pH)	pKa	solution	model	refs
G-Mito	402	405	550		PBS buffer	H2O2/CQ	(27)
R-Lyso	456	550	590		PBS buffer	H2O2/CQ	(27)
FMOTY	567	430	480		Tris-HCl buffer	serum-free medium	(78)
AMTC	624	550	590		Tris-HCl buffer	serum-free medium	(78)
SCY-4	588	559	581		PBS buffer	rapamycin	(79)
DMOTY	586	405	510		PBS buffer	rapamycin	(79)
RC-TPP	1064	425/585	475/615		Britton-Robinson buffer	CCCP	(80)
CRT	1056	400(9)/560(3)	475(9)/590(3)		DMSO	PMA	(81)
probe 8	620	405	472/576	6.96	PBS buffer	H2O2	(82)
probe D	682	436(3)/540(7)	470(3)/660(7)	6.01	PBS buffer		(83)