1330 



SULPHINIC ACID C7H.O4S, 



1, -, -1-Toluene disulphinic acid 



Its salts and methyl ester 



TrSger, J[ulius] und Meine, W. J. 

 prakt. Chem., Leipzig, (N.F.), 68, 1903, 

 (313-340). 



.399 1330 



BEXZPJXOID ACIDS WITH FOUR 

 OXYGEN ATOMS. 



ACIDS C.,H2„-804 



Acms C7H6O4 

 Dioxybenzoic acid 



CcH3(OH}2CO2H[4:2:l]03-ffesorci/Zicac;'d) 



-Methyl and ethyl ethers and esters. 



Herzig, J. und Wenzel, F. Wien, 

 MonHfte Chem., 24, 1903, (881-914). 



SULPHONIC ACIDS WITH FOUR 

 OXYGEN ATOMS. 



SULPHONIC ACIDS CnH2u-604S 

 SULPHONIC ACIDS C,H,04S 



Phenol sulphonic acid 



DlIODO-PHENOL p-SULPHOXIC ACID. CoUl- 



poiuid formed by addition of hydrogen 



fluoride to metallic salts 



C6H2l2(OH)S03K . HE 



Weinland, R[udoK] F. und StUle, W. 

 Liebigs Ann. Chem., Leipzig, 328, 1903, 

 (140-149). 



SULPHONIC ACID CioHuO^S 



Butyl-phenol sulphonic acid 



BR0M0-te7-t-BUTVL-PHEN0L SULPHONIC ACID 



C, oH,304SBr i.e. C4H9.C6H2Br(OH).S03H 



Potassium salt. 



Lewis, Edward W. [Potassium 2- 

 bromo-4-<e7'<-butylphenol-(J - sulphonate.] 

 London, J. Chem. Soc, 83, 1903, (330). 



ACID C,H.04 



Dioxytoluic acid 



l'5H2Me(OH)2 . C02H[2 : 6 : 4 : 1] 



{Orcinol carhoxylic acid) 

 Mcthijl and etlnjl ethers and esters 



Herzig, J. und Wenzel, F. Wieu, 



MonHfte Chem., 24, 1903, (881-914). 



Dioxytoluic acid 



C6H2Me(OH)2 . C02H[4 : 6 : 2 : 1] 



(OrselUnic acid) 



Methyl ethers and esters 



Herzig, J. und Wenzel, F. Wien, 

 MonHfte Chem., 24, 1903, (881-914). 



Dioxyphenylacetic acid 



CgHgO^ I.e. CeH3((JHj2 . CH2 . COjH 



Osborne, W. A. A new synthesis of 

 homogeutisic acid. Cambridge, Proc. 

 Physiol. Soc, 1903, (xiii-xiv). 



Thymol sulphonic acid 



' 'oiii])ound formed l)y addition of hydro- 

 gen fluoride to metallic salts 



CeHjMe(C3H7)(OH) . S03K,2HF 



Weinland, R[ndolfJ F. und StUle, W. 

 Liebigs Aim. Chem., Leipzia, 328, 1903, 

 (140-149). 



ACIDS Ci,Hn04 



Dioxyphenylvaleric acid 



Mono-mctltyl derivative 

 MeO . C6II4 . CM(OII) . CMej . CO^H 



Bajdakovskij, L. Syuthese de I'acide 

 anisyloxyinvalique. (Russe). St. Peter- 

 burg, Zurn. russ. fiz.-chim. ObSc., 35, 

 1903, (488-498). 



