Lipophilic squaraine rotaxane analog that emits in the far-red region of the spectrum and is known to accumulate at lipophilic sites inside living cells. Spectral properties: abs max = 650 nm and emission max = 678 nm.

Carboxyl functionalized squaraine rotaxane analog that emits in the far-red region of the spectrum. Spectral properties: abs max = 650 nm and emission max = 678 nm. This compound can be readily coupled to amino functionalities of biomolecules to provide fluorescent conjugates for use in multiple applications.

Squaraine rotaxane analog that emits in the far-red region of the spectrum and is functionalized with a maleimide group that can readily undergo conjugation with thiol groups. Spectral properties:abs max = 641 nm and emission max = 664 nm in ethanol.

Squaraine rotaxane analog that emits in the far-red region of the spectrum and is functionalized with a hydroxysuccinimide ester group that can readily undergo conjugation with amino groups of biomolecules to provide fluorescent conjugates for use in multiple applications. Spectral properties: abs max = 650 nm and emission max = 678 nm in DMSO.