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Oxazine 1
CAS 24796-94-9
Oxazine 1 is one of the most fluorescent NIR dyes. It has maximum absorption around ~650 nm with extinction coefficient larger than 100,000 M-1 cm-1. It has fluorescence emission around 670 nm, which is pH-independent. Although Oxazine 1 is quite stable from pH 4 to pH 10, it might be reduced by some biological molecules (such as DTT, GSH etc) at high concentration. Oxazine 1 is also an efficient laser dye tunable around 670 nm.
Chemical structure for Oxazine 1 *CAS 24796-94-9*
Chemical structure for Oxazine 1 *CAS 24796-94-9*
CatalogSize
Price
Quantity
8910 mg
Price
 
Physical properties

Molecular weight423.89
SolventDMSO
Spectral properties

Extinction coefficient (cm -1 M -1)
123000
Excitation (nm)648
Emission (nm)668
Quantum yield
0.1100
1
Storage, safety and handling

H-phraseH303, H313, H333
Hazard symbolXN
Intended useResearch Use Only (RUO)
R-phraseR20, R21, R22
StorageFreeze (< -15 °C); Minimize light exposure
UNSPSC12171501
CAS24796-94-9
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Page updated on October 13, 2025