Cochineal Red A
IUPAC 名称
7-hydroxy-8-[(E)-2-(4-sulfonaphthalen-1-yl)diazen-1-yl]naphthalene-1,3-disulfonic acid
描述
Synthetic food colouring
Because it is an azo dye, it may elicit intolerance in people allergic to salicylates (aspirin). Additionally, it is a histamine liberator, and may intensify symptoms of asthma.; Ponceau 4R (also known as Food Red 7[citation needed], C.I. 16255[citation needed], Cochineal Red A[citation needed], New Coccine, Acid Red 18, SX purple[citation needed]) is a synthetic colourant that may be added to foods to induce a colour change. It is denoted by E Number E124, and has the capacity for inducing an allergic reaction. Its chemical name is trisodium salt of 1-(4-sulpho-1-napthylazo)- 2-napthol- 6,8-disulphonic acid.; Ponceau 4R is a red azo dye usually synthesized from coal tar which can be used in a variety of food products.
异构
OC1=C(\N=N\C2=CC=C(C3=CC=CC=C23)S(O)(=O)=O)C2=C(C=C(C=C2C=C1)S(O)(=O)=O)S(O)(=O)=O
InChI标识符
InChI=1S/C20H14N2O10S3/c23-16-7-5-11-9-12(33(24,25)26)10-18(35(30,31)32)19(11)20(16)22-21-15-6-8-17(34(27,28)29)14-4-2-1-3-13(14)15/h1-10,23H,(H,24,25,26)(H,27,28,29)(H,30,31,32)/b22-21+
键
JZGWEIPJUAIDHM-QURGRASLSA-N