Table 1. Characterization Data for BASP-ORCAs and Control Compounds.

	composition		diameter		relaxivity
name	m	N	Dh/nm	DTEM/nm	r1/mM–1 s–1	r2/mM–1 s–1	notes
3-CPa					0.15	0.17
chex-MMb					0.21	0.30
chex-dendrimera					0.44	0.86
chex-bottlebrushb	55.55		17b	n.d.	0.32	0.82
BASP-ORCA	5.05	20	31 ± 2	n.d.	0.27	6.92	poor solubility (<10 mg/mL)
BASP-ORCA	5.05	30	49 ± 6	n.d.	0.53	7.11	poor solubility (<10 mg/mL)
BASP-ORCA1	7.07	20	31 ± 4	37 ± 7	0.41	4.67	good solubility (>50 mg/mL)
BASP-ORCA	7.07	30	36 ± 3	n.d.	0.35	7.40	poor solubility (<10 mg/mL)
BASP-ORCA	9.99	15	28 ± 3	38 ± 10	0.33	2.90	low relaxivity
BASP-ORCA	9.99	30	33 ± 4	39 ± 10	0.37	4.52	low relaxivity

^aFrom refs (52 and 53).

^bFrom ref (80).