251500-M

DAF-2

A highly sensitive and specific fluorescent indicator for the direct detection of nitric oxide (NO) in vitro.

• Synonym(s): DAF-2, 4,5-Diaminofluorescein
• Empirical Formula (Hill Notation): C₂₀H₁₄N₂O₅
• CAS Number: 205391-01-1
• Molecular Weight: 362.34
• MDL number: MFCD05865100
• UNSPSC Code: 12171500
• NACRES: NA.25

Properties

• Quality Level: 100
• Assay: ≥98% (HPLC)
• form: solution
• manufacturer/tradename: Calbiochem^®
• storage condition: OK to freeze; protect from light
• color: pale yellow
• fluorescence: λ_ex ~495 nm; λ_em ~515 nm
• storage temp.: −20°C
• InChI: 1S/C20H14N2O5/c21-15-7-11-14(8-16(15)22)20(27-19(11)25)12-3-1-9(23)5-17(12)26-18-6-10(24)2-4-13(18)20/h1-8,23-24H,21-22H2
• InChI key: LTYUPYUWXRTNFQ-UHFFFAOYSA-N

Description

General description

A highly sensitive and specific fluorescent indicator for the direct detection of nitric oxide (NO) in vitro. The relatively non-fluorescent DAF-2 reacts rapidly with NO in the presence of oxygen to yield the highly fluorescent triazolofluorescein compound (DAF-2T, Cat. No. 251510). Can detect NO under neutral conditions (detection limit = 5 nM).

A highly sensitive and specific fluorescent indicator for the direct detection of nitric oxide (NO) in vivo. The relatively non-fluorescent DAF-2 reacts rapidly with NO in the presence of oxygen to yield the highly fluorescent compound triazolofluorescein (DAF-2 T). Can detect NO under neutral conditions (detection limit = 5 nM). Excitation maximum: 495 nm; emission maximum: 515 nm.

Biochem/physiol Actions

Primary Target
Fluorescent indicator for the direct detection of nitric oxide (NO) in vitro.

Warning

Toxicity: Irritant (B)

Physical form

A 5 mM (1 mg in 550 µl) solution in DMSO.

Reconstitution

Following initial thaw, aliquot and freeze (-20°C).

Other Notes

Berkels, R., et al. 2000. Cell Calcium27, 281.
Kojima, H., et al. 1998. Anal. Chem. 70, 2446.
Kojima, H., et al. 1998. Chem. Pharm. Bull. 46, 373.
Nakatsubo, N., et al. 1998. FEBS Lett. 427, 263.

Legal Information

Manufactured by Daiichi Pure Chemicals Co., Ltd

CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany

Safety Information

• Storage Class Code: 10 - Combustible liquids
• WGK: WGK 2
• Flash Point(F): 188.6 °F - closed cup - (Dimethylsulfoxide)
• Flash Point(C): 87 °C - closed cup - (Dimethylsulfoxide)