Date published: 2026-5-1

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7H-Benzimidazo[2,1-a]benz[d,e]isoquinolin-7-one (CAS 23749-58-8)

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CAS Number:
23749-58-8
Molecular Weight:
270.29
Molecular Formula:
C18H10N2O
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.
* Refer to Certificate of Analysis for lot specific data.

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7H-Benzimidazo[2,1-a]benz[d,e]isoquinolin-7-one, also known as Yellow-green 490RT, luminogren, Luminophor 2, or Luminor 2, finds utility in the design and synthesis of donor-acceptor conjugated compounds. It enables efficient photoinduced charge transfer and separation, making it valuable for photovoltaic devices. Additionally, it serves as a component in bipolar charge transport materials for light-emitting diodes.


7H-Benzimidazo[2,1-a]benz[d,e]isoquinolin-7-one (CAS 23749-58-8) References

  1. New dyestuffs for synthetic fibres, benzimidazo-thioxantheno-isoquinolin-ones  |  Grayshan, P. H., Mak, K. H. R., & Peters, A. T. 1974. Journal of Applied Chemistry and Biotechnology. 24(3): 121-130.
  2. New Intermediates and Dyes for Synthetic-polymer Fibres. Benzimidazothioxanthenoisoquinolinone Dioxides and Sulphones of 7H-Benzimidazo (2, 1-a) benz(d, e) isoquinolin-7-one  |  Peters, A. T., & Mak, K. H. 1985. Journal of the Society of Dyers and Colourists,. 101(12): 398-403.
  3. Amino derivatives of 1,8-naphthalic anhydride and derived dyes for synthetic-polymer fibres  |  Peters, A. T., & Bide, M. J. 1985. Dyes and Pigments. 6(5): 349-375.
  4. Thioethers and sulphones of 7H-benzimidazo(2,1-a)benz-(d,e)isoquinolin-7-one: Dyes for synthetic-polymer fibres  |  Peters, A. T., & Behesti, Y. S. S. 1986. Journal of Chemical Technology & Biotechnology. 36(7): 319-328.
  5. Phenylazo derivatives of 1,8-naphthalimides and of 7H-benzimidazo(2, 1-a)benz(d, e)isoquinolin-7-ones: dyes for synthetic polymer fibres  |  A.T. Peters, M.J. Bide. 1986. Dyes and Pigments. 7(4): 237-247.
  6. 7H-pyrazolo[5, 1-a]benz[d,e]isoquinolin-7-ones: Yellow to orange dyes for synthetic-polymer fibres  |  Peters, A. T., & Saidi, K. 1989. Journal of Chemical Technology & Biotechnology. 44(4): 289-298.
  7. An experimental and computational study of intramolecular charge transfer: Diarylamino derivatives of 7H-benzimidazo(2,1-a)benz(d,e)isoquinolin-7-ones  |  Jiang, W., Tang, J., Qi, Q., Sun, Y., Ye, H., & Fu, D. 2009. Dyes and Pigments. 80(3): 279-286.

Ordering Information

Product NameCatalog #UNITPriceQtyFAVORITES

7H-Benzimidazo[2,1-a]benz[d,e]isoquinolin-7-one, 25 g

sc-262934
25 g
$648.00

7H-Benzimidazo[2,1-a]benz[d,e]isoquinolin-7-one, 100 g

sc-262934A
100 g
$1061.00