Table 1.

Physicochemical property of L-BPA and [¹⁹F]-L-FBPA

	L-BPA	[19F]-L-FBPA
Melting point	285–298 °C	266–269 °C
Solubility (water, 25 °C)	1.6 g/L	2.6 g/L
Acid dissociation constant	pKa: 2.10 (−COOH)	pKa: 2.11 (−COOH)
	pKb1: 8.43 (−NH2)	pKb1: 7.71 (−NH2)
	pKb2: 9.79 (−B(OH)2)	pKb2: 9.49 (−B(OH)2)