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CAS RN: 254973-02-9 | Product Number: A5576

AABD-SH (=4-Acetamido-7-mercapto-2,1,3-benzoxadiazole) [for HPLC Labeling]

Purity: >95.0%(HPLC)
  • 4-Acetamido-7-mercaptobenzofurazan
  • 4-Acetamido-7-mercapto-2,1,3-benzoxadiazole
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Product Number A5576
Purity / Analysis Method >95.0%(HPLC)
Molecular Formula / Molecular Weight C__8H__7N__3O__2S = 209.22  
Physical State (20 deg.C) Solid
Storage Temperature 0-10°C
Store Under Inert Gas Store under inert gas
Condition to Avoid Air Sensitive,Heat Sensitive
CAS RN 254973-02-9
PubChem Substance ID 87563193
MDL Number


Appearance Light yellow to Brown powder to crystal
Purity(HPLC) min. 95.0 area%
Effect test of HPLC derivatization Effective as labeling agent for Caproic Acid, Lauric Acid, Myristic Acid, Palmitic Acid
Properties (reference)
Related Laws:
Transport Information:
HS Number 2934.99.9001
HPLC Labeling Reagent for Carboxylic Acids

The compound 1 is an HPLC labeling reagent, which has a bromoacetyl group and easily reacts with a carboxyl group to form the corresponding ester in the presence of a base. The resultant ester is stable and can reach the detector without any decomposition under reversed phase HPLC. An excellent chromatogram can be obtained by measuring at 254 nm, an absorption wavelength that is generally used for UV detection. Application examples:[Fatty acids]1, 2, 8, 9)Dissolve a sample in methanol or water, and then neutralize the sample solution with methanol solution of KOH-crown ether. Evaporate to dryness under reduced pressure, and then you will see a generally almost white solid substance remaining (potassium salt of fatty acid). Next, add the HPLC labeling reagent 1 with acetonitrile solution* of 18-crown 6-ether to this white solid and further add acetonitrile for a volume up to 1 mL. Incubate the solution at 8 ºC for 15 min. Cool the resultant solution to room temperature and use it as an HPLC sample.* Benzene can be used in the place of acetonitrile. The mixing ratio (molar ratio) for the HPLC labeling reagent 1 and 18-crown 6-ether should be 2 to 1 and 1 to 1 for the sample fatty acid concentrations at .5~2 mM and less than .5 mM, respectively. Use the excessive amount of the reagent 1.[Others]Dicarboxyl acids2), synthetic prostaglandins3), unsaturated fatty acids4), alkyl methylphosphonate5), ganglioside6), betaine7)TCI Products Pamphlet


1)T. Santa, T. Okamoto, S. Uchiyama, K. Mitsuhashi, K. Imai, Analyst 1999, 124, 1689.

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