DICTIONARY OK THE ACTIVE PRINtll'LEf! Or VI.ANTS. 



Concentrated suljihuric acid, pink ; dark violet on -warming. 

 ,, ., „ containing ferric oxide, pink. 



., nitric acid, orange. 



(U)) PROTOPINE A., C.HigNO,-, (Hesse), or Co„H,rNO, (G. KJinig). 

 From opium, also in Cbelidonium and Sanguinaria ; see Ohelidonium 

 group. Crystalline ; M.P. 204° (Kiinig) ; alkaline. 



Soluble in chloroform, with difficulty in alcohol and ether, scarcely in 

 benzene, not in water. 

 Reactions : 



Alkaline hydrates, pp. insoluble in e.\cess. 

 Ammonia, dissolves. 

 lodopotassic iodide, ])p. 



(20) TRITOPINE A., Cj.,H,^N.,07 (E. Kander) ; prismatic crystals ; 

 M.P. 182'. 



Soluble easily in chloroform, slightly in ether. 

 Reactions : 



Alkaline hydrates I i 1 1 • 



, • •' - pp. insoluble in excess. 



Ammonia ) '^' 



lodo-potassic iodide, pp. 



(21) LAUDANOSINE A.. 0,,H.,,XOj (Hesse) ; prismatic crystals ; M.P. 

 89° : dextro-rotatory ; alkaline, bitter, very poisonous. 



Soluble ver3- readil)' in alcohol and chloroform, in 1',' jiarts ether, also 



in l)enzene and petroleum ether ; not in water. 



Reactions : 



Alkaline hydrates I . , , , 

 , • ■' 1 insoluble. 



Ammonia ) 



[No coloration with ferric chloride.] 



Platinum chloride, pp. yellow. 



Concentrated sulphuric acid, reddish-brown. 



„ „ „ at 1.50° C, green-^dirty violet. 



(22) MECONIN B. (Opianyl); C,„H,„04 = (CH30), ; C,;H,<gQ->0 ; 

 exists in opium in amounts varying from O'Ol to O'tS per cent ; also 

 obtainable from Narcotine, and from Opianic acid r't{''(-) f C^Ho -, /-.qtt 

 by reduction. Crystallizes in hexagonal prisms; M.P. 110^, yielding 

 sublimate, and recrystallizing on cooling, or melts under water at 77° ; 

 optically inactive ; neutral reaction ; bitter. 



Soluble in 700 parts cold water or 22 boiling ; also in alcohol, ether, 

 chloroform, benzene, amyl alcohol, ethereal oils, and glacial acetic acid. 

 Removed from acid solutions by arayl alcohol, chloroform and benzene. 

 Reactions : 



Alkaline hydrates dissolve, forming meconate. 

 Ferric chloride, blood-red not decolorized by hydrochloric acid. 

 [No precipitates by metallic salts.] 



Concentrated sulphuric acid, colourless ; becoming ])urple on warming, 

 or gradually green in the cold ; reddish after twenty-four hours. 



(2:!) PSEUDOMECONIN B., C,„Hi„Oj; resembles preceding ; M.P. 123°-124". 



(24) MECONIC ACID, C^HjO^+SHoO ; characteristic opium acid, present 

 to the extent of about 4 per cent, on an average ; crystallizes in prisms 

 or scales ; evolves carbonic acid on heating to 120° C. 



Soluble in alcohol and amyl alcohol, less readily in ether, with diffi- 

 culty in water, scarcely in chloroform. 



It may be removed from acid solutions by amjl alcohol and ether. 

 Reactions : Alkaline hydrates dissolve. 



Calcic chloride to neutral solution, precipitates. 

 Pp. lead acetate. 



Ferric chloride, blood-red coloration not discharged by hydrochloric 

 acid. 



(2.0) MECONOISIN B., CsHl.O.. (T. and H. Smith); crystalline; M.P. 

 88° ; distils at 280°. 



Soluble in alcohol easily, also in ether, but scarcely in water. 



(2t)) OPIONIN B. : nitrogen free (Hesse, 188.5) ; crystallizes in needles ; 

 M.P. 227° ; neutral reaction. 



. ■ ^ ' dissolve ; acids re-precipitate. 



Ammonia ( r r 



i IGO. PALICOUREA marcgravii ; Ruh'iacea-. Investigator : Peckholt. 

 Archiv. Phann. [2], 127, 93. 



PALICOURINE A., Crystallizing in silky needles, and forming crystalline 

 salts. 



Precipitates with mo.st alkaloid reagents (Dupuy). 



§ IGl. PANAX quinquefolius (Aralia quinquefolia, Decaisne ; Ameri- 

 can ginseng) ; Ariiliarp(i\ The root. Investigator : Garrigues, A?iii. 

 Chein. P//«n»., 90, 231. 



