Acids. 



717 



1330 



BENZEXOID ACID CH.n-o+O, 

 ACID C20H16O7 



Pyrocatecholphthaleinic acid 



[(HOJ2C6H3]2CiUHj.C6H,.C02H 

 Anhydride C20H14O6 



Meyer u. Pfotenliauer. Brenzcatechin- 

 phthalein. B., 40, i,144:2i. 



SULPHONIC ACIDS WITH EIGHT 

 OXYGES' ATOMS. 



ACID C12H10O.S2 



4 : i'-Diphenol 3 : 3'-disulphonic acid 



SOjH.CfHjCUHj.CeH/OHj.SOjH 



aud its salts. 



Potassium 5 : 5'-dibromo-i: : i'-dipJienol 



3 : o'disulphonate. 



Potassium diphenetole disidphonate. 



Moir, J. J.C, 91, (1305). 



BEXZENOID ACIDS WITH EIGHT 

 OXYGEX ATOMS. 



BEXZEXOID ACID CEz^-nOs 



ACID CoHeOo 



Dioxyphenylacetic dicarboxylic 

 acid 



C6H;0H)2(CO2Hj2.CH2.C0,H[5 : 3:1';4 :1] 

 Methyl and ethyl esters. 

 Haller et March. BL, 33, (618). 



BENZEXOID ACID CHsn-uOa 

 ACID CnH.jOs 



Phenylpropane tetracarboxylic 

 acid i'6H5-CH[CH;C02Hj2]2 



Kotz. Xitrophenylpropaiitetracarbon- 

 siiureester. J. pr., 75, (506). 



BENZEXOID ACIDS CnHon.^eOa 

 ACIDS CaeHisOs 



- : 6-Dicarboxybenzoyl-i : 5-dioxy- 



naphthalene 



C02H.C6H4.CU.CioH4(OH)2.CO. 



CeH^.COjH 



Bentley, Friedl & Weizmann, C. -J.C, 



•91, !l5SSj. 



BENZEXOID ACIDS C«H2n-.,0a 

 ACID C HhO, 



i,l'-Dianthraquinouyl 2,2'-di- 

 carboxylic acid 



luid the 'linmide. 

 SchoU, R. B., 40, (1691). 

 (,D-S53G) 



BEXZEXOID ACIDS WITH XIXE 



OXYGEX ATOMS. 



ACID Ci.HisOg 



Brazilinic acid 



C02H.CH2.0.C6H3rOMe).CO. 

 CVH,'0MeJ2.C0,H 



Perkin & Robinson. Synthesis of 

 brazilinic acid aud the lactones of di- 

 hydrobrazilinic and diliydrohaematosv- 

 linic acids. London, Proc. Chain. .Soc, 

 23, (291j. 



ACID C.HieOj 



Ethylglaucophanic acid. 

 Liebermann u. Truchsass, H. B., 

 40, (35Sl!. 



SULPHOXIC ACID WITH TEN 

 OXYGEN ATOMS. 

 ACID Cr.HgO.oSz 



Disulphonaphthalic acid 



Cj.HvSOjHyj'.CUjHij [2:6:1:8] 

 and its anilide. 



BargeUini. 43983. Derivati solfoDici 

 dell'anidride naftalica. 



BENZEXOID ACIDS WITH TEN 



OXYGEN ATOMS. 



ACID CsHisOio 



Cinnamylidene-bis-acetone 

 dicarboxylic acid 



tthyl ester. 



Petrenko-Kritschenko u. Lewln, M 

 B., 40, (2882). 



SULPHONIC ACID WITH ELEVEN 

 OXYGEN ATOMS. 

 ACID CnH.oOnS^ 



4 : 4'-Diphenol 3:5: 3'-trisulphonic 

 acid ^S03H)2C6Hj(C)H).C6H3(OH).SO,H 

 and its jiotassium salt. 

 Moir, J. J.r., 91, (1305). 



SULPHONIC ACID WITH FOUR- 

 TEEN OXYGEN ATOMS. 

 ACID CoH.oOmS* 



4 : 4 -Diphenol ."■ : 5 : 3' : 5'-tetra- 



sulphonic acid 

 (S03U)2C5Uj,UH).CgIIj(OH)(S03H), 



and its salts. 

 Moir, J. J.C, 91, (1305). 



3 B 2 



