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CAS RN: 33008-06-9 | Product Number: A5552

Dansyl Hydrazine [for HPLC Labeling]

Purity: >97.0%(T)
  • 5-Dimethylaminonaphthalene-1-sulfonyl Hydrazine
1   ≥20 
1   ≥20 

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Product Number A5552
Purity / Analysis Method >97.0%(T)
Molecular Formula / Molecular Weight C__1__2H__1__5N__3O__2S = 265.33  
Physical State (20 deg.C) Solid
Store Under Inert Gas Store under inert gas
Condition to Avoid Light Sensitive,Air Sensitive
CAS RN 33008-06-9
Reaxys Registry Number 2868662
PubChem Substance ID 87563170
SDBS (AIST Spectral DB) 5050
MDL Number


Appearance White to Light yellow to Green powder to crystal
Purity(HPLC) min. 95.0 area%
Purity(Potassium bromate Method) min. 97.0 %
Effect test of HPLC derivatization Effective as labeling agent for Heptanal
Properties (reference)
Solubility (slightly sol. in) Alcohol
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:
EC Number 251-337-7
Transport Information:
HS Number 2935909099
HPLC Labeling Reagent for Carbonyl Compounds

The compound 1 is an HPLC fluorescence labeling reagent, and can easily react with a carbonyl group to form the corresponding hydrazone. The resultant hydrazone is 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 340 nm and 525 nm, respectively.

Application examples:
[Ketosteroids] 1~4)
A dried sample, 0.2 mL of an alcoholic hydrochloric acid (conc. HCl 0.65 mL / ethanol 1 L), and 0.2 mL of the labeling reagent 1 in alcohol (2 mg / mL) are mixed, and heated on a water bath for 10 min. 0.2 mL of alcohol containing sodium pyruvate (5 mg / mL) is added to decompose the excess labeling reagent. The reaction mixture is allowed to stand at room temperature for 15 min, ether (6 mL) and 0.5 N NaOH (3 mL) are added and shaken. After an extraction procedure, the solvent is evaporated, chloroform (0.2~0.5 mL) is added to the residue, and use as the HPLC sample.
Hydrocortisone in body fluid3,4), reducing sugars, steroids in serum and urine5)


PubMed Literature

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