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4-Hydroxybenzoic Acid

4-Hydroxybenzoic acid is a monohydroxybenzoic acid, a phenolic derivative of benzoic acid. It is primarily known as the basis for the preparation of its esters, known as parabens, which are used as preservatives in cosmetics. It can be found naturally in Cocos nucifera.

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4-Iodo Pyridine

15854-87-2,4-Iodo Pyridine

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4-Iodoanisole

696-62-8,4-Iodoanisole 

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4-Methylquinoline

4-Methylquinoline is a heterocyclic aromatic organic compound. Its methyl group is fairly acidic, allowing for condensations to occur at this position, especially when the nitrogen is quaternized. It is used in the preparation of certain dyes.

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4-Nitrophenol

4-Nitrophenol is a phenolic compound that has a nitro group at the opposite position of hydroxy group on the benzene ring. It is an intermediate in the synthesis of paracetamol. 4-Nitrophenol is used as the precursor for the preparation of phenetidine and acetophenetidine, indicators, and raw materials for fungicides. Bioaccumulation of this compound rarely occurs. In peptide synthesis, carboxylate ester derivatives of 4-nitrophenol may serve as activated components for construction of amide moieties.

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4-Pyrimidinamine, 5-(bromomethyl)-2-methyl-, monohydrobromide

4-Pyrimidinamine, 5-(bromomethyl)-2-methyl-, monohydrobromide is used in laboratory as research chemical.

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