4159-77-7 Usage
Description
Rose Bengal lactone is a bluish-pink powder that is soluble in water. It exhibits unique properties when exposed to different substances, such as emitting blue light when in a yellow solution and turning brown in concentrated sulfuric acid. Rose Bengal lactone is stable at its melting point and has poor light fastness, making it unsuitable for applications requiring high resistance to light exposure.
Uses
Used in Biological Stains:
Rose Bengal lactone is used as a biological stain for its ability to color various biological samples, aiding in their visualization and analysis under a microscope.
Used in Colorants for Inks, Cellulosics, and Foods:
Rose Bengal lactone is utilized as a colorant in the production of inks, cellulosics, and the food industry due to its vibrant blue color when dissolved in water.
Used in Cosmetics Coloring:
Rose Bengal lactone is employed as a coloring agent in the cosmetics industry, where its blue hue adds a unique aesthetic appeal to various cosmetic products.
Used in Medicine (Diagnostic Aid):
In the medical field, Rose Bengal lactone serves as a diagnostic aid, helping healthcare professionals identify specific conditions or assess the health of tissues.
Chemical Resistance:
The material's resistance to different substances is as follows:
Water: Soluble
Sodium Carbonate (5%): Stable
Hydrochloric Acid (5%): Poor
Preparation
will Resorcinol and 4,5,6,7-Tetrachloroisobenzofuran-1,3-dione condensation, The resulting 4,5,6,7 – tetrachloro-fluorescein tetraiodide.
Standard
Light Fastness
Melting point
Stable
ISO
Poor
Check Digit Verification of cas no
The CAS Registry Mumber 4159-77-7 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,1,5 and 9 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 4159-77:
(6*4)+(5*1)+(4*5)+(3*9)+(2*7)+(1*7)=97
97 % 10 = 7
So 4159-77-7 is a valid CAS Registry Number.
InChI:InChI=1/C20H4Cl4I4O5/c21-9-7-8(10(22)12(24)11(9)23)20(33-19(7)31)3-1-5(25)15(29)13(27)17(3)32-18-4(20)2-6(26)16(30)14(18)28/h1-2,29-30H
4159-77-7Relevant articles and documents
Rose Bengal and Nonpolar Derivatives
Lamberts, Joseph J. M.,Neckers, D. C.
, p. 7465 - 7467 (1983)
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Process for the Synthesis of 4,5,6,7-tetrachloro-3',6'-dihydroxy-2',4',5',7'-tetraiodo-3H-spiro[isobenzofuran-1,9'-xanthen]-3-one (Rose Bengal) and Related Xanthenes
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, (2011/04/18)
A new process for the manufacture of iodinated xanthenes in high purity includes a cyclization step followed by an iodination step. No extraction, chromatographic or solvent concentration steps are required, and the intermediate as well as final compounds are isolated via filtration or similar means. The process requires a single organic solvent, and the steps are completed at temperatures below 100° C. The exclusion of chloride ions, of chloride free-radicals, hypochlorite ions, or hypochlorous acid as reagents or from reagents that may generate these species in situ in the presence of oxidants, prevents undesirable impurity formation. Several new compounds have been conceived and isolated using these methods. These new compounds are also formed into new medicaments.
