The Plant Alkaloids
The book The Plant Alkaloids was written by author Here you can read free online of The Plant Alkaloids book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is The Plant Alkaloids a good or bad book?
Where can I read The Plant Alkaloids for free?
In our eReader you can find the full English version of the book. Read The Plant Alkaloids Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book The Plant Alkaloids
In our eReader you can find the full English version of the book. Read The Plant Alkaloids Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book The Plant Alkaloids
What reading level is The Plant Alkaloids book?
To quickly assess the difficulty of the text, read a short excerpt:
P. 268-269, [a]^ + 204-5 in alcohol (Hesse), + 190 at 14 (Rabe), less soluble in chloroform or alcohol (1 in 22 T 5) than cinchonine. The base is diacidic and forms two series of salts ; the neutral sulphate, B 2 . H 2 S0 4 . 11H 2 0, forms fine needles, m. P. 194'8-195 (dry), soluble in water (1 in 37'6 at 12). The hydrochloride, B. HC1. 2H 2 0, m. P. 216. 5, occurs in small needles, and the platinichloride, B 2 . 2HCl. PtCl 4, in orange-red needles sparingly soluble in water.
Hydrocinchonidin...e (Cinchamidine), C 19 H 24 ON 2 . This alkaloid was isolated by Forst and Bohringer 4 from the bark of Cinchona Ledgeriana, but has since been observed accompanying homo- cinchonidine (p. 151) in many varieties of cinchona, and espe- cially C. Rosulenta and C. Lancifolia. It is best prepared from commercial cinchonidine sulphate by fractional precipitation with sodium tartrate, the hydrocinchonidine tartrate occurring in the last fractions ; these are treated with potassium permanganate solution, which rapidly destroys cinchonidine, but only slowly attacks the hydro-base ; the latter can then be regenerated by addition of excess of ammonia.
What to read after The Plant Alkaloids?
You can find similar books in the "Read Also" column, or choose other free books by Thomas Anderson Henry to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
P. 268-269, [a]^ + 204-5 in alcohol (Hesse), + 190 at 14 (Rabe), less soluble in chloroform or alcohol (1 in 22 T 5) than cinchonine. The base is diacidic and forms two series of salts ; the neutral sulphate, B 2 . H 2 S0 4 . 11H 2 0, forms fine needles, m. P. 194'8-195 (dry), soluble in water (1 in 37'6 at 12). The hydrochloride, B. HC1. 2H 2 0, m. P. 216. 5, occurs in small needles, and the platinichloride, B 2 . 2HCl. PtCl 4, in orange-red needles sparingly soluble in water.
Hydrocinchonidin...e (Cinchamidine), C 19 H 24 ON 2 . This alkaloid was isolated by Forst and Bohringer 4 from the bark of Cinchona Ledgeriana, but has since been observed accompanying homo- cinchonidine (p. 151) in many varieties of cinchona, and espe- cially C. Rosulenta and C. Lancifolia. It is best prepared from commercial cinchonidine sulphate by fractional precipitation with sodium tartrate, the hydrocinchonidine tartrate occurring in the last fractions ; these are treated with potassium permanganate solution, which rapidly destroys cinchonidine, but only slowly attacks the hydro-base ; the latter can then be regenerated by addition of excess of ammonia.
What to read after The Plant Alkaloids?
You can find similar books in the "Read Also" column, or choose other free books by Thomas Anderson Henry to read onlineMoreLess
Read book The Plant Alkaloids for free
Write Review:
Guest
Read Also
9 / 10
User Reviews: