Robuta

https://www.semanticscholar.org/topic/2%2C4-dinitrophenylacetic-acid/12341420 2,4-dinitrophenylacetic acid | Semantic Scholar acidsemanticscholar https://webbook.nist.gov/cgi/inchi/InChI%3D1S/C8H6N2O6/c11-8(12)3-5-1-2-6(9(13)14)4-7(5)10(15)16/h1-2%2C4H%2C3H2%2C(H%2C11%2C12) 2,4-Dinitrophenylacetic acid acid