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Structure of 521-24-4
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1,2-Naphthoquinone-4-sulfonic acid sodium salt (Folins reagent) was used in the colorimetric assay for determination of procaine hydrochloride in pharmaceutical preparations.
Sodium 3,4-dioxo-3,4-dihydronaphthalene-1-sulfonate serves as a versatile dienophile in Diels–Alder reactions, enabling efficient access to functionalized naphthalene scaffolds. Its sulfonate group enhances solubility and facilitates purification, while the diketone functionality provides orthogonal reactivity for downstream transformations. The compound exhibits excellent bench stability and compatibility with standard synthetic workflows.
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GHS Pictogram :
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GHS No : GHS07
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Signal Word : Warning
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UN#: N/A
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Class : N/A
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Packing Group : N/A
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Hazard Statements : H315-H319
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Precautionary Statements : P264-P280-P302+P352-P362+P364
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Lot numbers can be found on the outside label of a product: