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The Chemical Entities of Biological Interest (ChEBI) ontology is downloaded weekly from EMBL-EBI at The data is made available under the Creative Commons License (CC BY 3.0, For more information see: Degtyarenko et al. (2008) ChEBI: a database and ontology for chemical entities of biological interest. Nucleic Acids Res. 36, D344–D350.

Term:methyl red
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Accession:CHEBI:49770 term browser browse the term
Definition:An azo dye consisting of benzoic acid substituted at position 2 by a 4-[(dimethylamino)phenyl]diazenyl group.
Synonyms:exact_synonym: 2-{[4-(dimethylamino)phenyl]diazenyl}benzoic acid
 related_synonym: 2-((4-Dimethylamino)phenylazo)benzoic acid;   2-Carboxy-4'-(dimethylamino)azobenzene;   2-[(p-Dimethylamino)phenyl]azobenzoic acid;   4'-(Dimethylamino)azobenzene-2-carboxylic acid;   4'-Dimethylaminoazobenzene-2-carboxylic acid;   4-Dimethylamino-2'-carboxylazobenzene;   C.I. Acid Red 2;   Formula=C15H15N3O2;   InChI=1S/C15H15N3O2/c1-18(2)12-9-7-11(8-10-12)16-17-14-6-4-3-5-13(14)15(19)20/h3-10H,1-2H3,(H,19,20)/b17-16+;   InChIKey=CEQFOVLGLXCDCX-WUKNDPDISA-N;   SMILES=CN(C)c1ccc(cc1)\\N=N\\c1ccccc1C(O)=O;   o-((p-(Dimethylamino)phenyl)azo)benzoic acid;   o-Methyl red;   p-(Dimethylamino)azobenzene-o-carboxylic acid
 xref: CAS:493-52-7;   KEGG:C19459;   MetaCyc:CPD0-1147;   PDBeChem:MRE;   PMID:21929853;   Reaxys:750102;   Wikipedia:Methyl_red
 cyclic_relationship: is_conjugate_acid_of CHEBI:71579

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  CHEBI ontology 19810
    role 19758
      application 19420
        dye 1299
          methyl red 0
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  CHEBI ontology 19810
    subatomic particle 19808
      composite particle 19808
        hadron 19808
          baryon 19808
            nucleon 19808
              atomic nucleus 19808
                atom 19808
                  main group element atom 19696
                    main group molecular entity 19696
                      s-block molecular entity 19456
                        hydrogen molecular entity 19447
                          hydrides 18703
                            inorganic hydride 17433
                              pnictogen hydride 17405
                                nitrogen hydride 17247
                                  diazene 262
                                    azo group 261
                                      azo compound 261
                                        azobenzenes 233
                                          methyl red 0
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