ChemicalBook >> CAS DataBase List >>5(6)-Nitrofluorescein
5(6)-Nitrofluorescein
- CAS No.
- 78512-32-0
- Chemical Name:
- 5(6)-Nitrofluorescein
- Synonyms
- 5(6)-Nitrofluorescein;3',6'-Dihydroxy-5(or 6)-nitro-3H-spiro[isobenzofuran-1,9'-xanthen]-3-one;3',6'-Dihydroxy-5(or 6)-nitro-3H-spiro[isobenzofuran-1,9'-xanthen]-3-one
- CBNumber:
- CB22594938
- Molecular Formula:
- C20H11NO7
- Molecular Weight:
- 377.30384
- MDL Number:
- MFCD00059693
- MOL File:
- 78512-32-0.mol
Last updated:2024-01-18 09:25:39
SAFETY
Risk and Safety Statements
Symbol(GHS) | ![]() GHS07 |
---|---|
Signal word | Warning |
Hazard statements | H302-H315-H319-H335 |
Precautionary statements | P280-P305+P351+P338 |
5(6)-Nitrofluorescein Chemical Properties,Uses,Production
Uses
5(6)-Nitrofluorescein is the mixture of 5- and 6-nitrofluoresceine isomers. This compound is a useful compound that could be used to synthesize fluorescein 5-isothiocyanate.
Synthesis
A process for the preparation of a mixture (5(6)-Nitrofluorescein) of 3′,6′-dihydroxy-6-nitrospiro[2-benzofuran-3,9′-xanthene]-1-one and 3′,6′-dihydroxy-5-nitrospiro[2-benzofuran-3,9′- xanthene]-1-one comprising the steps of (a) reacting 4-nitrophthalic acid or 4-nitrophthalic anhydride with benzene-1,3-diol in methanesulphonic acid; (b) quenching the reaction in step (a) with a solvent to precipitate product; (c) isolating the precipitate; (d) heating the precipitate in water in order to hydrolyse any methansulphonic acid ester present.
5(6)-Nitrofluorescein Preparation Products And Raw materials
Raw materials
Preparation Products
5(6)-Nitrofluorescein Suppliers
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78512-32-0(5(6)-Nitrofluorescein)Related Search:
5(6)-Nitrofluorescein
3',6'-Dihydroxy-5(or 6)-nitro-3H-spiro[isobenzofuran-1,9'-xanthen]-3-one
3',6'-Dihydroxy-5(or 6)-nitro-3H-spiro[isobenzofuran-1,9'-xanthen]-3-one
78512-32-0