Ilydroquorate of strychnine 4 Iir, +4 Aq.) crystallises in prime on evaporating a solution of strychnine iu hydrofluoric acid.
Hydroniferots of strychnine (C„H„S,0,,IIC1+ 3 Aq.), crystallises in needles, is neutral to test-paper, and even more soluble in water than the sulphate.
Sulphate: of strychnine. A eratra/ salt containing (2 C„I1,N,0,, 2 110 + 14 Aq.) is formed on digesting excess of strychnine in dilute sulphuric acid ; it crystallises in small rectangular prisms. The acid salt containing is produced when strychnine is dissolved in excess of dilute sulphuric acid ; it crystallises in long needles. Sulphate of strychnine and copper is a crystalline salt formed when strychnine is boiled with sulphate of copper.
Chromate of strychnine (C„11,,N,0,,Cr0,, HO) falls as a yellow pfe cipitate when chromate of potash is added to a salt of strychnine. It is soluble in hot water, crystallising out in beautiful orange needles on cooling. A Uchremate also exists.
Nitrate of strychnine (C„H„N,O., 110,N0,) is obtained by saturating strychnine with dilute nitric acid. It crystallises in needles. Heated with concentrated nitric acid it forms nitrate of nitro-strychnine, The following nre the principal remaining compounds of strychnine with acids and with metallic salts.
Chloroplatinate of strychnine . ChlorepaUedite of strychnine . PdCI ChIersurete of strychnine . IICI, a. 211gC1 Chloromerearates of strychnine . B. C„II, MCI, 2IIgCI t r. 4IIgCI Perchlorate of strychnine . II0, Aq.
Itydrobrernate of strychnine . IIEr Ilydriodatc of at ryclinine . ill Nitrate of strychnine and silver . AgO, a. 3110, Aq.
Phosphates of strychnine . IL 9110, PO, + I 8 Aq.
a. 2110 Oxalates of strychnine . . B. 2110 is 411Cy, 2FeCy+ IC Aq.
Ferrocynnates of strychnine . . B. 2IICy, 2FeCy +3 Aq.
Y• 3C 3I1Cy, 3FcCy+ 12 Aq. a. lifiCy nydargyrocyanates of strychnine P. 11Cy, lIgC1 Y. 4IIgCy Ilydrosnlphoeyanate of strychnine . a. Aq.
Tertrates of strychnine . • .
{ li. Aq.
Chlorine, and iodine deriratirca of strychnine. alaro strychnine is formed by the action of chlorine upon solution of hydrochlorate of strychnine ; it combines with acids to form salts. liromostrychnine is produced when bromi0 is made to act upon hydrochlorate of strychnine. Iodostrychnine, or iodide of strychnine (2 obtained on triturating strychnine with iodine, crystallises from alcohol in scales.
Methyl and ethyl thriratires of strychnine. According to M. Stahl schmidt these compounds are not in the slightest degree poisonous. They are powerfully basic. With iodide of ethyl, strychine gives a crystalline hydriothite of ctliyinstryclinitt, or iodide of ethylostrychnium 111), and this with oxide of silver yields bihydrato of ethyloetrychnia, or rather hydrated oxide of ethylostrychnium 0,110. Hydrated oxide of methylostrychnium is best obtained by decomposing the sulphate with baryta water.
Strychnie acid is the name given by M. Rousseau to the product of the action of heat upon a mixture of strychnine, chlorate of potash, and sulphuric acid.
2. Brucine 8 Aq ). Canimarine, Vomieine. This alka loid was discovered by Pelletier and Caventou, in the bark of the false anguatura, which is the bark of the strychnosnux vomica, and not, as wan supposed when its name was given to it, of the bruda nigh/peti te-rico. This alkaloid, like strychnine, is found e.onibined with gallic acid in the (auk, and with igasuric acid in the fruits of some of the different species of strychnos.
It may be obtained by evaporation and crystallisation of the mother liquor from the precipitation of chromate of strychnine, already described ; or, according to TM/lard, by dissolving the soluble portion of the nux vomica bark In water, mixing the solution with a little oxalic acid, and evaporating it to the consistence of a syrup. This is to be treated, at 32' Fehr., with anhydrous alcohol, which dissolves ererything but the oxalate of brucine. This salt is then to be boiled In water with inapt:alit ; the precipitated brucine is to be dissolved in boiling alcohol, from which it crystallises on cooling.