74568-18-6

Basic information

• Product Name: -p-aminobenzoic acid
• Synonyms: -p-aminobenzoic acid
• CAS NO: 74568-18-6
• Molecular Weight: 138.127
• Mol File: 74568-18-6.mol
• Article Data: 3

Chemical Properties

• CAS DataBase Reference: -p-aminobenzoic acid(CAS DataBase Reference)
• NIST Chemistry Reference: -p-aminobenzoic acid(74568-18-6)
• EPA Substance Registry System: -p-aminobenzoic acid(74568-18-6)

Safety Data

• Hazardous Substances Data: 74568-18-6(Hazardous Substances Data)

Upstream product

• 5089-33-8 2-(4-bromophenyl)-1,1,1,3,3,3-hexamethyldisilazane 
• 1111-72-4 carbon dioxide 
• 69838-88-6 -p-nitrobenzoic acid 
• 159528-76-4 4-nitrobenzo<13C>nitrile 
• 615-36-1 2-bromoaniline 

Downstream Products

• 69838-88-6 -p-nitrobenzoic acid 
• 170745-63-8 acide 4-iodobenzoique-13C 

Relevant articles and documents

Biosynthesis of aurachins A-L in Stigmatella aurantiaca: A feeding study

The isolation of aurachins A-L (1-11) from Stigmatella aurantiaca strain Sg a15 is described. Their structures and relative configurations were deduced from spectroscopic data, in particular NMR. Three structural types were identified: A-type aurachins (1, 2, 6) are C-3 oxygen-substituted quinolines carrying a farnesyl residue on C-4, C-type aurachins (3, 4, 7-11) are C-4 oxygen-substituted quinolines carrying a farnesyl residue on C-3, and C-type aurachin E (5) has a [1,1a,8,d]imidazoloquinoline structure. Feeding of 13C-labeled precursors showed that the quinoline ring is constructed from anthranihc acid and acetate, and the farnesyl residue from acetate by both the mevalonate and nonmevalonate pathways. Further, feeding of labeled aurachin C (3) indicated the A-type aurachins are derived by a novel intramolecular 3,4-migration of the farnesyl residue that is induced by a 2,3-epoxidation and terminated by a reduction step. 18O-Labeling experiments indicated the new oxygen substituents originate from atomospheric oxygen. On the basis of these results a biosynthetic scheme covering all aurachins is proposed. It is further proposed that quinolones with an unorthodox substitution pattern, such as the 2-geranylquinolones from Pseudonocardia sp. and the 3-heptylquinolones from Pseudomonas sp., are formed by related rearrangement mechanisms.

NUMBER AND STRUCTURE OF SOLVOLYSIS INTERMEDIATES. PART 3. SN1 SOLVOLYSIS OF 2,2-DIMETHYL-1-(p-METHOXYPHENYL)PROPYL p-NITROBENZOATE: MECHANISM OF THE COMMON ION SALT EFFECTS ARISING AT THE STAGE OF THE SECOND ION-PAIR INTERMEDIATE

2,2-Dimethyl-1-(p-methoxyphenyl)propyl p-nitrobenzoate (ROPNB) was subjected to solvolysis in phenol in the presence of tetrabutylammonium -p-nitrobenzoate, in which the 'common ion rate depression' was confirmed to arise at the stage of the