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CAS RN: 49759-20-8 | Product Number: A5591

NAM [=N-(9-Acridinyl)maleimide] [for HPLC Labeling]

Purity: >98.0%(HPLC)
  • N-(9-Acridinyl)maleimide
  • 9-Maleimidoacridine
18   ≥20 
5   ≥20 

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* The storage conditions are subject to change without notice.

Product Number A5591
Purity / Analysis Method >98.0%(HPLC)
Molecular Formula / Molecular Weight C__1__7H__1__0N__2O__2 = 274.28  
Physical State (20 deg.C) Solid
Store Under Inert Gas Store under inert gas
Condition to Avoid Light Sensitive,Moisture Sensitive
CAS RN 49759-20-8
Reaxys Registry Number 484577
PubChem Substance ID 87563198
MDL Number


Appearance White to Amber powder to crystal
Purity(HPLC) min. 98.0 area%
Effect test of HPLC derivatization Effective as labeling agent for N-Acetyl-L-cysteine
Properties (reference)
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.
P305 + P351 + P338 : IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
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:
H.S.code* 2933.99-000
*This code is applied to the products when TCI exports from Japan and not for import in your country.
HPLC Labeling Reagent for Thiols

The compound 1 is an HPLC fluorescence labeling reagent, and can easily react with a mercapto group at room temperature. The resultant sulfide is stable enough to reach the detector without any decomposition under reversed phase HPLC. An excellent chromatogram can be obtained by fluorescence detection analysis at the excitation and emission wavelengths of 355 nm and 465 nm, respectively. Application example:[Thiols] 1~5).4 mL of 3% NaOH solution and 1 mL of .2 M boric acid buffer solution (pH 8.8) are added to 2 mL of 1 mM sample solution in water. To this solution, .5 mL of 1 mM labeling reagent 1 / acetone solution is added and shaken, and reacted at room temperature for 3 min to use it as a HPLC sample.TCI Products Pamphlet


1)Y. Nara, K. Tujimura, Bunseki Kagaku 1973, 22, 451.

2)Y. Nara, K. Tujimura, Agric. Biol. Chem. 1978, 42, 793.

3)H. Takahashi, Y. Nara, K. Tujimura, Agric. Biol. Chem. 1979, 43, 1439.

4)H. Takahashi, Y. Nara, K. Tujimura, Agric. Biol. Chem. 1976, 40, 2493.

5)H. Takahashi, T. Yoshida, H. Meguro, Bunseki Kagaku 1981, 30, 339.

PubMed Literature


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