2016年8月10日星期三

Nordihydroguaiaretic acid

Product name:Nordihydroguaiaretic acid
CAS:500-38-9
Molecular Formula:C18H22O4
Formula Weight:302.36
Description:
Melting point:180 - 185 C 
Boiling point:526.5 °C at 760 mmHg
Flash Point:247.8 °C
Density:1.241 g/cm3
Chemical property:white to off-white powder.
Use:Antioxidant.

Soybean protein for sale

Product Name: Soy Protein
Product Description: Soy protein is a kind of vegetable protein. Amino acid composition of soy protein and milk protein nearby, the other essential amino acids, in addition to the little low methionine are relatively rich, is a plant of the complete protein, the nutritional value, but with animal protein, amino acids to the genetic structure, most of which in the near the human body, so is the nutritional vegetable protein.

Mannatide use

Product Name: Mannatide
Product Description: This product is used in the treatment of low immune function caused by various diseases, all types of viruses can cure the bacteria to treat recurrent respiratory infections, chronic bronchitis, used in the treatment of anemia aplastic and white blood platelet function, etc. . Then different tumors are used to treat, etc., associated with chemotherapy and radiotherapy for lung cancer, stomach cancer, colon cancer, esophageal cancer, breast cancer, leukemia

Flutriafol use

Stereoselective dissipation flutriafol and tebuconazole in grapes was studied. A simple and sensitive method for the determination of flutriafol and tebuconazole enantiomers grape was developed by chromatography high performance liquid chromatography on a cellulose tris (3-chloro-4-methylphenylcarbamate) column. The quantification limits for flutriafol and tebuconazole in the grapes were 0.033 and 0.043 mg kg (-1) are. The excesses of flutriafol and tebuconazole stereoisomers in grapes followed first-order kinetics (R (2)> 0.93). Stereoisomers of flutriafol and tebuconazole were enantioselective reduced in grapes and tebuconazole was enantioselective that flutriafol. The half-life of (-) - tebuconazole was 5.2 days and shorter than (+) - tebuconazole have with the 6.4 days half-life. The (-) - flutriafol was also reduced preferably in grapes, the half-life thereof were 6.59 and 6.98 days (-) and (+) - flutriafol, respectively. The value of the ratio of enantiomers of the two fungicides was approximately 1.0 on the first day and increased to 1.143 to 2.015 flutriafol and tebuconazole for 28 days. Stereoselective dissipation could provide a benchmark to assess the exact risks of two important chiral triazole fungicides.

2016年8月9日星期二

Ethoxysulfuron for sale


Product Name: ethoxysulfuron
CAS: 126801-58-9
Molecular formula: C15N4SO7H18
Molecular Weight: 398.39
Product Description: light gray powder, density 1.48, point of 141 ~ 147 ℃ melting .Branch synthetic amino acid chain or AHAS (ALS) inhibitors. By the amino acids valine and isoleucine biosynthesis blocked base, which prevents cell division and the growth of plants. A very good selectivity for the prevention and control of rice fields sedges and weeds annual broadleaved.

Paraquat price


Product Name: Paraquat
CAS: 1910-42-5
Molecular formula: C12H14Cl2N2
Molecular Weight: 257.2
Product Description: Can be used as a machine to take Spätlese cultures defoliant adjuvants are used. Because the crop at harvest after approaches defoliants do not realize the ideal effect of defoliation, green groups paraquat can be used as a quick killing crops, making the dry dehydration, does not affect the mechanical harvest after harvest, the short-term fruit storage and transportation. Like cotton, peppers and other crops harvest low moisture absorption of cotton seeds and fruits, when a strong moisture absorption, even in the short time the accumulated mold can occur. to reduce this requirement to the extent possible when the fresh leaves and stems harvested, paraquat kill quickly use green groups to reduce the moisture absorption of raw cotton and peppers, ensure machine storage postharvest and transportation can be a little time.

Phosalone use

In this study potential biomarkers of oxidative stress and histopathological changes in the common carp (Cyprinus Carpio, L., 1758) were studied who were exposed to different concentrations of phosalone in vivo. Fish were exposed to 0.15, 0.3 and 0.6 mg / l concentrations phosalone in a semi-static control to 14 of biomarkers, in particular Na (+), K (+) -. ATPase, reduced glutathione (GSH) reactive thiobarbituric acid substances (TBARS) and histopathological changes were determined in the gill tissue, liver and fish kidneys. sublethal concentrations produced Phosalone increasing reactive oxygen species (ROS) antioxidant defense system peroxidation and reduced production of lipids. While GSH 7 in all groups for greater control over GSH decreased significantly in the medium and high doses in 14 days GSH levels reduced in all tissues and a significant induction of lipid peroxidation (TBARS) were reduced observed. Na (+), K (+) - ATPase enzymatic activity is significantly inhibited, particularly in the gills. No histopathological effects were observed in the control group. Lamellens aneurysm, lamellar fusion, hyperplasia, lifting the epithelium and bleeding were observed in subjects exposed Phosalone gill tissue. histopathological effects in liver tissue exposed to Phosalone fish were characterized by cytoplasmic vacuolization, congestion, hypertrophy and nuclear degeneration. Hypertrophy, tubular degeneration, mononuclear cell infiltration and glomerular capillaries of the expansion have been exposed in the tissues of kidney Phosalone noted. The results show that exposure to phosalone negatively affects the health of fish, due to oxidative stress.