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4-Aminobenzoic acid (also known as para-aminobenzoic acid or PABA because the two functional groups are attached to the benzene ring across from one another in the para position) is an organic compound with the formula H 2 NC 6 H 4 CO 2 H. PABA is a white crystalline solid, [3] although commercial samples can appear gray.
The molecular formula C 7 H 7 NO 2 (molar mass: 137.14 g/mol) may refer to: Aminobenzoic acids 2-Aminobenzoic acid (o-aminobenzoic acid, anthranilic acid) 3-Aminobenzoic acid (m-aminobenzoic acid) 4-Aminobenzoic acid (p-aminobenzoic acid, PABA) Mononitrotoluenes. 2-Nitrotoluene; 3-Nitrotoluene; 4-Nitrotoluene; Salicylaldoxime; Salicylamide ...
Benzocaine is the ethyl ester of p-aminobenzoic acid (PABA). It can be prepared from PABA and ethanol [29] by Fischer esterification or via the reduction of ethyl p-nitrobenzoate. Benzocaine is sparingly soluble in water; it is more soluble in dilute acids and very soluble in ethanol, chloroform, and ethyl ether.
Padimate O is an organic compound related to the water-soluble compound PABA (4-aminobenzoic acid) that is used as an ingredient in some sunscreens. This yellowish water-insoluble oily liquid is an ester formed by the condensation of 2-ethylhexanol with dimethylaminobenzoic acid. Other names for padimate O include 2-ethylhexyl 4 ...
Benzoic acid and its salts are used as food preservatives, represented by the E numbers E210, E211, E212, and E213. Benzoic acid inhibits the growth of mold, yeast [23] and some bacteria. It is either added directly or created from reactions with its sodium, potassium, or calcium salt. The mechanism starts with the absorption of benzoic acid ...
It is the ester of 4-aminobenzoic acid and butanol. [1] A white, odourless, crystalline powder. that is mildly soluble in water (1 part in 7000) and soluble in alcohol, ether, chloroform, fixed oils, and dilute acids. It slowly hydrolyses when boiled with water. Synonyms include Butamben, Butilaminobenzoato, and Butoforme.
It also can be prepared by treating benzaldehyde under nitration conditions, a process that initially converts the aldehyde to the acid. 4-Nitrobenzoic acid is a precursor to 4-aminobenzoic acid, which is in turn used to prepare the anesthetic procaine. 4-Nitrobenzoic acid is prepared by oxidation of 4-nitrotoluene.
Formula: C 8 H 9 N O 2: Molar mass: ... 4-aminomethylbenzoic acid or p-aminomethylbenzoic acid, PAMBA) is an antifibrinolytic. [1] See also. 4-Aminobenzoic acid ...