Dictionary of the active principles of plants: alkaloids : bitter principles; glucosides; their sources, nature, and chemical characteristics / with tabular summary, classification of reactions, and full botanical and general indexes. By Charles E. Sohn.
- Sohn, Charles E.
- Date:
- 1894
Licence: Public Domain Mark
Credit: Dictionary of the active principles of plants: alkaloids : bitter principles; glucosides; their sources, nature, and chemical characteristics / with tabular summary, classification of reactions, and full botanical and general indexes. By Charles E. Sohn. Source: Wellcome Collection.
Provider: This material has been provided by The University of Leeds Library. The original may be consulted at The University of Leeds Library.
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![Silver Nitrate (10.)] Glucosides. Antiarin (ammoniacal AgN03). Chicorin. Convolvulin, pp. (?). Cyclamin. [Daphnin, slight reduction on warming.] Gentiopicrin (ammoniacal AgNO:1). Menyanthin ,, ,, Quercetrin. Khamnin. Robinin, slow reduction. [Saponine, slow reduction on warming.] Sinalbin, white pp., then black pp. of AqS- Solanine. Strophanthin. Xanthostrumarin, slight reduction on warming, or at once with ammoniacal AgNO;i. Bitter principles and Glucoside derivatives. iEsculetin. CLASSIFICATION OF REACTIONS, ETC. Arnicin (alcoholic). Cantharidin, white crys. pp. Catechin, gn. pp. -~ violet-black (ammoniacal AgN03). Cornin, white crys. Cyclamiretin. Daphnetin. Lactucin (ammoniacal AgNO:i). Lygustron ,, ,, Ononid, pp. Ophelic Acid. Quercetin. Rhamnetin. Sapogenin (ammoniacal AgNO.,). II. No reaction with following : Aloin. Ceratophyllin. Cnicin. Ericolin. Erythrocentaurin. Picrotoxin. Quassiin. Scoparin. Villosin. 11. FEHLINGS SOLUTION (alkaline copper the following : Alkaloids. Aconine, on boiling. Aspidospermine. Ceanothine, on boiling. [Echitamine, after treatment with acid]. [Lobeliine, after treat- ment with acid.] [ Valdi vine, after treat- ment with alkali.] Glucosides. Acorin. Bergenin. Camellin. Cephalanthin, after boiling. ChamielLrin, after boil- ing Chicorin. Colocynthin. tartrate) is reduced by Coriamyrtin. Cyclamin, white pre- cipitate. [Helixin, after inver- sion.] Tndican. [Melanthin, after in- version.] Menyanthin. [Phillyrin, after inver- sion.] Picrocrocin, on warm- ing. Quercitrin, on boiling. Robinin. Saponin, slowly. Sinalbin (copper sul- phide also formed). Smilacin. [Villosin, after inver- sion.] Not by the following Alkaloids. Calamine. Lobeliine (not till in- verted). Macrocarpine. Pseudaconine. Theine, if pure. Glucosides. Arbutin. Diosmin. Gentiopicrin. [Potassium [X a n t h o s t r u m arin, after inversion.] Bitter Principles and Glucoside deriva- tives. iEsculetin. Cvclamiretiu, pp. ■ Daphnetin. (amongst others) : Helixin, not till in- verted. Linamarin. Melanthin, not till in- verted. Phillyrin, not till in- verted. Rhamnin, no pp. Sapotin. Solanine. Strophanthin. Villosin, not till in- verted. Ferrocyanide (12). Fisetin (on warming). Karakin, gn. pp. or reduction. Kellin. Lactucin. Ophelic Acid. Picrotoxin. Quercetin, on boiling. Rhamnetin, cold. Sapogenin. slightly. Xanthostrumarin, not till inverted. Bitter Principles and Glucoside deriva- tives. Aristolochin. Chirettin. Ilixanthin. Marrubiin. Opionin. Sikimin. Syringopicrin. 12. POTASSIUM FERROCYANIDE. I. Gives precipitates with the following alkaloids : Akazgine. Apomorphine, reddish - y. (gn. warm). Atherospermine. Bebeerine, y. Brucine,y. crys. (blue on exposure), not 1 in 500. Cinchonidine, reddish-y. crys. Cinchonine, yellowish-white, not 1 in 500, sol. warm. Cocaine, sol. in exces=. Codeine, white (alcoholic), slight pp. 1 in 1,000. [Colchicine, coned.] Curarine. Emetine, 1 in 1,000. Harmaline, red. Hydrastine, white. Hymenodictyonine.](https://iiif.wellcomecollection.org/image/b21503023_0168.jp2/full/800%2C/0/default.jpg)
