8-((4-hydroxy-3-methoxyphenyl)diazenyl)naphthalene-1,3-disulfonic acid as an antioxidant compound
An 8-((4-hydroxy-3-methoxyphenyl)diazenyl) naphthalene-1,3-disulfonic acid compound, its synthesis, and its use as an antioxidant agent.
1. An 8-((4-hydroxy-3-methoxyphenyl)diazenyl) naphthalene-1,3-disulfonic acid compound having the formula I:
2. A pharmaceutically acceptable composition comprising a therapeutically effective amount of the 8-((4-hydroxy-3-methoxyphenyl)diazenyl) naphthalene-1,3-disulfonic acid compound of claim 1 and a pharmaceutically acceptable carrier.
3. A method of producing an antioxidant effect in a patient comprising administering to a patient in need thereof a therapeutically effective amount of the 8-((4-hydroxy-3-methoxyphenyl)diazenyl) naphthalene-1,3-disulfonic acid of claim 1 .
4. A method of making the 8-((4-hydroxy-3-methoxyphenyl)diazenyl) naphthalene-1,3-disulfonic acid compound of claim 1 , the method comprising:
adding a cooled solution of sodium nitrite in water to a cooled solution of 8-aminonaphthalene-1,3-disulfonic acid and hydrochloric acid with stirring to obtain a cooled diazonium salt solution;
adding the cooled diazonium salt solution to a cooled solution of 2-methoxyphenolin in sodium hydroxide to obtain an azo dye precipitate;
filtering and recrystalling the azo dye precipitate using ethanol; and
obtaining the 8-((4-hydroxy-3-methoxyphenyl)diazenyl) naphthalene-1,3-disulfonic acid compound.
5. The method of making the 8-((4-hydroxy-3-methoxyphenyl)diazenyl) naphthalene-1,3-disulfonic acid compound of claim 4 , wherein each cooled solution is at a temperature of about 273.15 K.
6. The method of making the 8-((4-hydroxy-3-methoxyphenyl)diazenyl) naphthalene-1,3-disulfonic acid compound of claim 4 , wherein the cooled solution of sodium nitrite in water is added to the cooled solution of 8-aminonaphthalene-1,3-disulfonic acid and hydrochloric acid in an ice bath.
7. The method of making the 8-((4-hydroxy-3-methoxyphenyl)diazenyl) naphthalene-1,3-disulfonic acid compound of claim 4 , wherein the cooled diazonium salt solution is added to the cooled solution of the 2-methoxyphenolin in sodium hydroxide in an ice bath.
8. The method of making the 8-((4-hydroxy-3-methoxyphenyl)diazenyl) naphthalene-1,3-disulfonic acid compound of claim 5 , wherein the cooled solution of sodium nitrite in water added to the cooled solution of the 8-aminonaphthalene-1,3-disulfonic acid and the hydrochloric acid is stirred for at least about 20 minutes.
9. The method of making the 8-((4-hydroxy-3-methoxyphenyl)diazenyl) naphthalene-1,3-disulfonic acid compound of claim 5 , wherein the sodium nitrite, the 8-aminonaphthalene-1,3-disulfonic acid, and the 2-methoxyphenol are added in about a 1:1:1 molar ratio.
10. The method of making the 8-((4-hydroxy-3-methoxyphenyl)diazenyl) naphthalene-1,3-disulfonic acid compound of claim 5 , wherein the filtered precipitate is washed multiple times with cold water.