800cw nhs ester

800CW NHS ester is a near-infrared probe used for labeling lysine residues (λ max = 776 nm) [1][2].

Rhodamine 800 is a near-infrared fluorescent dye.

ICG-carboxylic acid is a fluorescent probe in the near-infrared (NIR) range. It is derived from indocyanine green (ICG), a commonly used fluorescent dye in medical diagnostics. ICG exhibits a peak absorption at 800 nm, allowing it to efficiently absorb energy from near-infrared lasers and release heat within the dyed tissue.

Rhodamine B hydrazide serves as an effective probe for sulfite detection, transitioning from colorless and non-fluorescent to emitting Rhodamine B-like fluorescence upon interaction with sulfite (5-800 ng mL; detection limit=1.4 ng mL (3σ)). This process occurs as sulfite reduces dissolved oxygen, generating superoxide radicals that react with Rhodamine B hydrazide to yield Rhodamine B. The addition of Tween 80 surfactant micelles further enhances this fluorescence. The absorption and fluorescence emission maxima of Rhodamine B hydrazide are at 554 nm and 574 nm, respectively [1].

S0456, a near-infrared (NIR) fluorescent dye, binds to the folate receptor (FR) and is utilized in the synthesis of Pafolacianine. It serves as a tumor-specific optical imaging agent with an excitation wavelength of 788 nM and an emission wavelength of 800 nM [1].