GLPBio

Quinophthalone

Catalog No.: GC74224
COASDSData Sheet
Quinophthalone is a dye with distinctive greenish yellow color.

Products are for research use only. Not for human use. We do not sell to patients.

Quinophthalone
Cas No.: 5662-03-3
1 mgIn Stock
$495.00
1
Tel: (909) 407-4943 / (909) 689-7124Email: sales@glpbio.com

Citations

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    Nature
    641, 529–536 (2025)
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    628, 630–638 (2024)
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    632, 686–694 (2024)
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    618, 1017–1023 (2023)
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    Nature
    610, 366–372 (2022)
  • Cell cover
    Cell
    187(9):2288-2304 (2024)
  • Cell cover
    Cell
    183(7):1867-1883 (2020)
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    Science
    388(6745) (2025)
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    387(6734) (2025)
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    Cell Research
    35, 97–116 (2025)
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    34, 683–706 (2024)
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    33, 273–287 (2023)
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    33, 546–561 (2023)
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    33, 904–922 (2023)
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    31, 1291–1307 (2021)

Description

Quinophthalone is a dye with distinctive greenish yellow color. Quinophthalone is used as coloring agents for various materials. Quinophthalone is a strong sensitizer in guinea pigs, and its threshold concentration for induction and challenge is 10 ppm.

References:
[1]. Gi Rim Han, et al. Shedding new light on an old molecule: quinophthalone displays uncommon N-to-O excited state intramolecular proton transfer (ESIPT) between photobases. Sci Rep. 2017 Jun 20;7(1):3863.
[2]. Y Sato, et al. D&C nos. 10 and 11: chemical composition analysis and delayed contact persensitivity testing in the guinea pig. Contact Dermatitis. 1984 Jan;10(1):30-8.

Product Documents

Appearance:A solid
COASDSData Sheet

Chemical Properties

CAS No.
5662-03-3
Molecular Formula
C18H11NO2
Molecular Weight
273.29
Storage
4°C, protect from light
General tips
Select a suitable solvent according to the product solubility data. Once prepared, aliquot the stock solution to avoid repeated freeze-thaw cycles.
Use stock solutions within 6 months when stored at -80°C or within 1 month when stored at -20°C.
To improve solubility, warm the tube to 37°C and sonicate it for an appropriate period.
Shipping Condition
Evaluation samples are shipped with blue ice. Other available sizes are shipped at room temperature or with blue ice upon request.

CalculatorsMolarity / Dilution / Molecular Weight / Unit Conversion / In Vivo Formulation / Solubility

g/mol

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