Archive for September, 2016

Abamectin Chemistry and Use

Posted: September 28, 2016 in Medicine raw material

Abamectin is a broadly acclimated insecticide and anthelmintic.Abamectin is a admixture of avermectins absolute added than 80% avermectin B1a and beneath than 20% avermectin B1b. These two components, B1a and B1b accept actual agnate biological and toxicological properties. The avermectins are insecticidal and antihelmintic compounds acquired from assorted class broths brewed by the clay bacillus Streptomyces avermitilis. Abamectin is a accustomed beverage artefact of this bacterium.

Abamectin is an insecticide as able-bodied as an acaricide and a nematicide.

Abamectin is acclimated to ascendancy insect and mite pests of a ambit of agronomic, fruit, vegetable and accessory crops, and it is acclimated by homeowners for ascendancy of blaze ants. Abamectin is aswell acclimated as a veterinary antihelmintic. Resistance to abamectin-based antihelmintics, although a growing problem, is not as accepted as to added classes of veterinary antihelmintics. The benzoate alkali emamectin benzoate is aswell acclimated as an insecticide.


Cytosine Structure

Posted: September 24, 2016 in Medicine raw material

Cytosine is one of the four capital bases begin in DNA and RNA, forth with adenine, guanine, and thymine (uracil in RNA). It is a pyrimidine derivative, with a heterocyclic ambrosial ring and two substituents absorbed (an amine accumulation at position 4 and a keto accumulation at position 2). The nucleoside of cytosine is cytidine. In Watson-Crick abject pairing, it forms three hydrogen bonds with guanine.

As a nitrogenous base, cytosine is abounding of nitrogen atoms (it has three). It aswell has one ring of carbon, which makes it a pyrimidine. A purine, on the added hand, has two rings of carbon. There are two pyrimidines (cytosine and thymine) and two purines (adenine and guanine) in DNA. RNA aswell has two pyrimidines (cytosine and uracil) and two purines (adenine and guanine).

In DNA, adenine and thymine are present in the aforementioned percentages and consistently brace with anniversary other. That leaves cytosine to brace with its double-ringed associate guanine. Cytosine aswell pairs with guanine in RNA.

Synonym:                        Dihydroresorcinol

CAS Number:                      504-02-9

Purity:                          ≥99%, Stabilized by 1-3% sodium chloride

Molecular Weight:                112.13

Molecular Formula:               C6H8O2

Solubility:                      Soluble in water (155 g/l) at 20° C, alcohol, chloroform, acetone, boiling benzene, ether (slightly), carbon disulfide (slightly), and petr ether (slightly).

Melting Point:                   102.8-105° C (dec.)

Boiling Point:                   235.06° C at 760 mmHg (Predicted)

Density:                         1.1 g/cm3 at 20° C

Storage:                         Store at 4° C


Used to prepare 2-substituted adducts, which are important intermediates for the synthesis of spirocyclopentanols, oxathioles, and triquinanes.

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Pyrrolidine is a achromatic to anemic chicken aqueous with an ammonia-like odor. Vapors added than air. Produces baneful oxides of nitrogen during combustion.Pyrrolidine, aswell accepted as tetrahydropyrrole, is an amoebic admixture with the atomic blueprint (CH2)4NH. It is a circadian accessory amine, aswell classified as a saturated heterocycle. It is a colourless aqueous that is miscible with baptize and a lot of amoebic solvents. It has a appropriate semen-like odor.Compared to acyclic accessory amines, it is about 10 times added basic.

Pyrrolidine is produced industrially by analysis of 1,4-butanediol with ammonia over an oxide catalyst.

Pyrrolidine is begin in the leaves of tobacco and carrot. The pyrrolidine ring anatomy is present in abundant accustomed alkaloids such as nicotine and hygrine. It is begin in abounding biologic drugs such as procyclidine and bepridil. It aswell forms the base for the racetam compounds. The amino acids proline and hydroxyproline are, in a structural sense, derivatives of pyrrolidine.


Where to buy Scutellarin?

Posted: September 3, 2016 in Herb Extracts

CAS: 27740-01-8

Molecular Formula: C21H18O12

Molecular Weight: 462.37

Product description:

Scutellarin is a flavone, a type of phenolic chemical compound. It can be found in Scutellaria barbata and S. lateriflora. The determination of the structure of scutellarin took Guido Goldschmiedt many years: after the first publication on that topic in 1901, only in 1910 he managed to obtain enough starting material for more detailed studies.

Scutellarin has been shown to induce apoptosis of ovarian and breast tumor cells in vitro.

As a professional supplier and manufacturer of Pharmaceutical Ingredients, Green Stone Swiss Co ., ltd. has been supplying quality Scutellarin to customers all over the world for over 10 years. If you have any questions or wish to receive a quote, please feel free to reach us by email: or by phone: +86 592 5365887 . Our sales person will get back to you in 1 working day.