New NIR rotaxane label

SeTau 680-NHS  (Φ = 0.58, ε = 215,000 and Φ. ε = 124,700) with a similar absorption emission as Alexa 680 is twice as bright as Alexa 680 (Φ = 0.36,  ε = 183,000 and Φ. ε = 65,880) and exhibits a lower quenching tendency when labeled to biomolecules. Exc./Em. max of IgG-conjugates: 682/703 nm.

			Excitation Light Sources												Characteristics
Product Number (Specs Sheet)	Product Name (Product Info)	Target Group	380	405	436	488	532	594	635	650	680	700	750	780	Medium	λ abs [nm]	ε [M –1 cm–1]	λ em [nm]	QY [%]	FLT [ns]	Buy
K9-4119 K9-4119	SeTau-665-NHS SeTau-665-NHS	NH2								•	•	•			PB 7.4	664	160000	712	53	3.1
K9-4148 K9-4148	SeTau-647-Maleimide SeTau-647-Maleimide	SH							•	•					PB 7.4	648	200000	692	45	3.2
K9-4149 K9-4149	SeTau-647-NHS SeTau-647-NHS	NH2							•	•					PB 7.4	649	200000	695	61	3.2
K9-4169 K9-4169	SeTau-670-NHS SeTau-670-NHS	NH2							•	•	•				PB 7.4	673	275000	694	36	1.6
K9-4179 K9-4179	SeTau-680-NHS SeTau-680-NHS	NH2							•	•	•				PB 7.4	683	295000	705	58	2.9