. Author manuscript; available in PMC: 2014 Oct 23.

Published in final edited form as: Nat Methods. 2007 Aug;4(8):619–628. doi: 10.1038/nmeth1072

Table 1. Properties of selected commercially available caged compounds.

Caged compound	Φ	ε(M^–1 cm^–1)	Φ × ε	Rate (s^–1)	Stability
Calcium chelators
DM-nitrophen^a^,^b	0.18	4,300	774	3.8 × 10⁴	Complete
NP-EGTA^a	0.23	970	194	6.8 × 10⁴	Complete
nitr-5^b	0.012	5,500	66	2.5 × 10³	Complete
diazo-2^a	0.03	22,800	1,596	2.3 × 10³	Complete
Neurotransmitters
CNB-Glu^a	0.14	500	70	4.8 × 10⁴	Fair
CNB-GABA^a	0.16	500	70	3.6 × 10⁴	Fair
CNB-	0.8	430	344	1.7 × 10⁴	Excellent
carbamoylcholine^a
MNI-Glu^c	0.085	4,300	366	∼10⁵	Excellent
Phosphates
NPE-IP₃^a^,^b	0.65	430	280	225 and 280	Excellent
NPE-cAMP^b	0.51	430	219	200	Fair
DMNPE-cAMP^a	0.05	5,000	250	300	Poor
NPE-cADPribose^a	0.11	430	271	18	Excellent
NPE-ATP-^a^,^b	0.63	430	271	90	Excellent
DMNPE-ATP ^a	0.07	5,000	350	18	Fair
Fluorophores
bis-CMNB-fluorescein^a	ND	2,000	ND	ND	Complete
DMNB-HPTS ^a	ND	∼5,000	ND	ND	Complete

From Invitrogen (Molecular Probes).

From Calbiochem.

From Tocris. ε, extinction coefficient; Φ, quantum yield. ND, not determined.