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CAS RN: 98358-90-8 | Product Number: A5595

DBD-F [=4-(N,N-Dimethylaminosulfonyl)-7-fluoro-2,1,3-benzoxadiazole] [for HPLC Labeling]

Purity: >98.0%(HPLC)
  • 4-(N,N-Dimethylaminosulfonyl)-7-fluoro-2,1,3-benzoxadiazole
  • 7-Fluoro-4-(N,N-dimethylaminosulfonyl)benzofurazan
  • 7-Fluoro-4-(N,N-dimethylsulfamoyl)-2,1,3-benzoxadiazole
2   6  

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Product Number A5595
Purity / Analysis Method >98.0%(HPLC)
Molecular Formula / Molecular Weight C__8H__8FN__3O__3S = 245.23  
Physical State (20 deg.C) Solid
Storage Temperature 0-10°C
Condition to Avoid Light Sensitive,Heat Sensitive
CAS RN 98358-90-8
Reaxys Registry Number 8142578
PubChem Substance ID 87563202
MDL Number


Appearance White to Light yellow to Light orange powder to crystal
Purity(HPLC) min. 98.0 area%
Melting point 124.0 to 128.0 °C
Effect test of HPLC derivatization Effective as labeling agent for L-Valine.
Properties (reference)
Melting Point 128 °C
Pictogram Pictogram
Signal Word Warning
Hazard Statements H315 : Causes skin irritation.
H319 : Causes serious eye irritation.
Precautionary Statements P264 : Wash skin thoroughly after handling.
P280 : Wear protective gloves/ eye protection/ face protection.
P302 + P352 : IF ON SKIN: Wash with plenty of water.
P337 + P313 : If eye irritation persists: Get medical advice/ attention.
P362 + P364 : Take off contaminated clothing and wash it before reuse.
P332 + P313 : If skin irritation occurs: Get medical advice/ attention.
Related Laws:
Transport Information:
HS Number 2935909099
HPLC Labeling Reagent for Amines and Thiols

The compound 1 which is an HPLC fluorescence labeling reagent having a 2,1,3-benzoxadiazole skeleton, can easily react with amino and mercapto groups to form the corresponding derivatives. The derivatives are stable enough to reach the detector without any decomposition under reversed phase HPLC. An excellent chromatogram can be obtained by fluorescence detection at the excitation and emission wavelengths of 450 nm and 590 nm, respectively.

Application example:
[Amino acids]
0.5 mL of 20 mM labeling reagent in acetonitrile is put into an amber-glass vial. To this solution, add 0.5 mL of 0.1 M boric acid buffer solution (pH 9.3, containing 1mM EDTANa2) containing several nmol of an amino acid, and incubate at 50 °C for 30 min. After cooling the reaction mixture with ice bath, use it as an HPLC sample.
For example, the detection limit (S/N=3) for proline is 0.11 pmol.


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