Quinaldine blue
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Hodoodo CAT#: H464231

CAS#: 2768-90-3

Description: Quinaldine blue is a cyanine dye. It is an organic cation, typically isolated as the chloride or iodide salts. The blue dye is prepared from 2-methylquinoline by quaternization with ethyl chloride or ethyl iodide. Condensation with formaldehyde results in coupling. Subsequent oxidation of the leuco intermediate gives the dye. Quinaldine blue is a prototypical cyanine dye that was widely used as a sensitizer in electrophotography. Its biological properties have also been investigated widely.


Chemical Structure

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Quinaldine blue
CAS# 2768-90-3

Theoretical Analysis

Hodoodo Cat#: H464231
Name: Quinaldine blue
CAS#: 2768-90-3
Chemical Formula: C25H25ClN2
Exact Mass: 388.17
Molecular Weight: 388.939
Elemental Analysis: C, 77.20; H, 6.48; Cl, 9.11; N, 7.20

Price and Availability

Size Price Availability Quantity
10mg USD -2 2 Weeks
25mg USD -2 2 Weeks
50mg USD -2 2 Weeks
100mg USD -2 2 Weeks
500mg USD -2 2 Weeks
2g USD -2 2 Weeks
250mg USD 210 2 Weeks
1g USD 370 2 Weeks
5g USD 690 2 Weeks
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Synonym: Quinaldine blue; NSC 56808; NSC56808; NSC-56808; Pinacyanol chloride;

IUPAC/Chemical Name: 1-ethyl-2-((E)-3-((E)-1-ethylquinolin-2(1H)-ylidene)prop-1-en-1-yl)quinolin-1-ium chloride

InChi Key: FVMNARAKYNRZID-UHFFFAOYSA-M

InChi Code: InChI=1S/C25H25N2.ClH/c1-3-26-22(18-16-20-10-5-7-14-24(20)26)12-9-13-23-19-17-21-11-6-8-15-25(21)27(23)4-2;/h5-19H,3-4H2,1-2H3;1H/q+1;/p-1

SMILES Code: CCN1/C(C=Cc2c1cccc2)=C/C=C/c(cc3)[n+](CC)c4c3cccc4.[Cl-]

Appearance: Solid powder

Purity: >98% (or refer to the Certificate of Analysis)

Shipping Condition: Shipped under ambient temperature as non-hazardous chemical. This product is stable enough for a few weeks during ordinary shipping and time spent in Customs.

Storage Condition: Dry, dark and at 0 - 4 C for short term (days to weeks) or -20 C for long term (months to years).

Solubility: TBD

Shelf Life: >2 years if stored properly

Drug Formulation: to be determined

Stock Solution Storage: 0 - 4 C for short term (days to weeks), or -20 C for long term (months).

HS Tariff Code: 2934.99.9001

More Info:

Biological target:
In vitro activity:
In vivo activity:

Solubility Data

Solvent Max Conc. mg/mL Max Conc. mM
Solubility
To be determined 0.0 0.00

Preparing Stock Solutions

The following data is based on the product molecular weight 388.94 Batch specific molecular weights may vary from batch to batch due to the degree of hydration, which will affect the solvent volumes required to prepare stock solutions.

Recalculate based on batch purity %
Concentration / Solvent Volume / Mass 1 mg 5 mg 10 mg
1 mM 1.15 mL 5.76 mL 11.51 mL
5 mM 0.23 mL 1.15 mL 2.3 mL
10 mM 0.12 mL 0.58 mL 1.15 mL
50 mM 0.02 mL 0.12 mL 0.23 mL
Formulation protocol:
In vitro protocol:
In vivo protocol:

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1: Vazquez-Duhalt R, Semple KM, Westlake DW, Fedorak PM. Effect of water- miscible organic solvents on the catalytic activity of cytochrome c. Enzyme Microb Technol. 1993 Nov;15(11):936-43. doi: 10.1016/0141-0229(93)90169-3. PMID: 7764253.

2: Niu H, Yee R, Cui P, Tian L, Zhang S, Shi W, Sullivan D, Zhu B, Zhang W, Zhang Y. Identification of Agents Active against Methicillin-Resistant Staphylococcus aureus USA300 from a Clinical Compound Library. Pathogens. 2017 Sep 20;6(3):44. doi: 10.3390/pathogens6030044. PMID: 28930155; PMCID: PMC5618001.