619-17-0

Orange prisms or orange powder. Sweet taste.

4-NITROANTHRANILIC ACID(619-17-0) is incompatible with acids, acid chlorides, acid anhydrides, chloroformates and strong oxidizing agents.

Insoluble in water.

Flash point data for this chemical are not available; however, 4-NITROANTHRANILIC ACID is probably combustible.

Orange crystalline powder

2-Amino-4-nitrobenzoic acid has three crystal structures^[1], respectively: monoclinic-1B, monoclinic-1C, and triclinic-1. Compound monoclinic-1B crystallises in the A ˚ space group P21/c with a = 4.039(4), b = 27.23(2), c = 7.284(7) Å, b = 112.783(15); compound monoclinic-1C crystallises in the space group P21/c with a = 3.71050(10), b = 25.3092(8), c = 24.3555 (17) A ˚ , b = 93.459(7) , and triclinic-1 crystallises in the space group P-1 with a = 3.7522(3), b = 8.5536(6), c = 24.4118(17), a = 88.738(9), b = 86.625(9), c = 87.769(9).
[1] SOLANGE M. S. V. WARDELL; James L W. Three New Polymorphs of 2-Amino-4-nitrobenzoic Acid[J]. Journal of Chemical Crystallography, 2015, 46 1: 34-43. DOI:10.1007/s10870-015-0625-8.

peptide synthesis

ChEBI: An aminobenzoic acid that is anthranilic acid with a nitro substituent at position 4.

reaction type: solution phase peptide synthesis

Crystallise the acid from water, EtOH (m 271o) or aqueous EtOH (m 269o). The acetyl derivative has m 217o (from EtOH), m 222o (from aqueous EtOH). [Chapman & Stephen J Chem Soc 1796 1925, Beilstein 14 II 234, 14 III 975, 14 IV 1087.]