Purity 99% Min HYDROXYNAPHTHOL BLUE 63451-35-4 Spot Supply with Safe Transportation
- Molecular Formula: C20H11N2Na3O11S3
- Molecular Weight: 620.4724
- Appearance/Colour: blue crystalline powder
- PSA： 261.92000
- LogP: 5.77430
HYDROXYNAPHTHOL BLUE(Cas 63451-35-4) Usage
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Purification Methods |
The crude material is treated with hot EtOH to remove soluble impurities, then dissolve in 20% aqueous MeOH and chromatographed on a cellulose powder column with propanol/EtOH/water (5:5:4) as eluent. The upper of three zones was eluted to give the pure dye which is precipitated as the monosodium salt trihydrate by adding conc HCl to the concentrated eluate [Ito & Ueno Analyst 95 583 1970]. It can be converted to the trisodium salt wih the calculated amount of alkali. Indigocarmine (2[1,3-dihydro-3-oxo-5-sulfo-2H -indol-2-ylidene]-2,3-dihydro-3-oxo-1H - |
InChI:InChI=1/C20H14N2O11S3.3Na/c23-15-9-16(35(28,29)30)13-3-1-2-4-14(13)18(15)21-22-19-12-6-5-11(34(25,26)27)7-10(12)8-17(20(19)24)36(31,32)33;;;/h1-9,22,24H,(H,25,26,27)(H,28,29,30)(H,31,32,33);;;/q;3*+1/p-3/b21-18-;;;
