Mesoporous carbon CMK-3

Product name : Mesoporous carbon CMK-3

Product description :

mesoporous carbon, a new type of non-silicon material has considerable attention because of its high surface area (up to 2500m2 / g) and pore volume (up 2.25cm3 / g), is intended for use in the field of catalyst supports, hydrogen storage electrode materials and other fields of technology. In general, because of the mesoporous material with an electrical resistance double layer capacity and excellent discharge capacity, and there is much higher than the metal oxide commercially available. In comparison with a pure mesoporous silicon material, carbon material mesoporous special characteristics such as high specific surface area, high porosity, size adjustable pores in a specific range, various forms mesoporous structure and properties adjustable thermal stability and hydrothermal stability, ease of synthesis and low physiological toxicity.

At the mesoporous exception because of the CMK-3 pores present structure, the pore size (3-10 nm), the ordinate specific surface area (500-1500 m2 / g), pore volume (0.7 to 1 5 cc / g). The surface area and high specific pore volume, good electrical conductivity, excellent biocompatibility and corrosion resistance of CMK-3, are within the field of electrochemistry, catalyst carrier, adsorbent column and protein separation used has great potential.

What is dehydrocholic acid

Dehydrocholic (jersey-5-β-cholic acid) was synthesized from cholic acid, with 200 mg of the mixed carrier and administered intravenously to two patients with T tube designed sampling of the indwelling bile without interrupting the enterohepatic circulation -hépatique allows. More than 80% of the radioactivity excreted was infused in the form of glycine conjugated bile acids and taurine in bile quickly. Radioactive products were identified after partially or completely reduced hepatic derivatives dehydrocholic. Mass spectrometry and chromatography, the main metabolite (about 70%) is a bile acid monoketo dihydroxybenzyl (cholanic acid 3α, 7α-dihydroxy-12-keto-5β); a second metabolite (approximately 20%) is a monohydroxy-diketo acid (cholanic 3α-hydroxy-7,12-di-keto-5β); and about 10% of the radioactivity was as cholic acid. The reduction appears to have been sequentially (3 positions, the positions 7 and 12 position) and stereospecific (only α epimer was recovered).
Bile, as the ratio between the flow of bile acid excretion in the bile expressed was increased by dehydrocholic administration. It was hypothesized that ketone hydroxylated metabolites are hydrocholeretics. not significantly change after the administration of the proportion of cholesterol into bile acids, lecithin and dehydrocholic. In vitro studies have shown that keto-hydroxy metabolites cholate are dispersed lecithin bad compared; However, mixtures of cholate and either a dispersion metabolite has similar properties to those alone, provided that the ratio of cholate metabolites for each metabolite remained cholate below a characteristic value. The experiments reveal a new metabolic pathway in humans, provide further insight into the hydrocholeresis induced keto bile acids, and show the remarkable change of pharmacological and physical properties. Replacement of hydroxyl group by a keto substituent in the bile acid molecule

Lisuride Maleate price

Product name: Lisuride Maleate

Specification: 

Cas No.: 18016-80-3

Description: 
Lisuride maleate is a derivative of semi-synthetic ergot which is an analogue of the LSD 25 lisuride maleate, ergotamine derivative, an agonist of dopamine D2 with effects and uses similar to those of bromocriptine. Lisuride maleate has a potent anti-serotonin action antihistamine and a central dopaminergic activity may also be lisuride maleate effective for the treatment of migraine.

Muscle glycogen concept

The importance of carbohydrates as an energy source during endurance training is known for 60 years. With the advent of needle muscle biopsy in the 1960s, it was found that the main source of carbohydrates during exercise are the glycogen reserves. It was shown that the capacity between 65 to 75% VO2max exercised at intensities of pre-exercise glycogen levels in the muscle bound, ie more glycogen reserves, more exercise time to exhaustion. Because of the critical importance of muscle glycogen during prolonged, intense exercise, a considerable amount of research has been conducted in order to design the best diet to increase muscle glycogen stores prior to the competition and the most effective means of replenishment quickly determining the glycogen after training. The rate determining step in the glycogen synthesis is the transfer of glucose from uridine diphosphate-glucose on an amylose chain. This reaction is catalyzed by the enzyme glycogen synthase, which in a glucose 6-phosphate-dependent, inactive form (form D) and an active form of glucose 6-phosphate can independent (I-form) exist. The conversion of glycogen synthase from one form to the other is controlled by phosphorylation-dephosphorylation reactions. The concentration of muscle glycogen can vary greatly depending on the level of conditioning, exercise routines and diet. The pattern of muscle glycogen re-synthesis after exercise-induced exhaustion is biphasic. After completion of movement and adequate glycogen muscle carbohydrate consumption is rapidly resynthesized to close before training levels within 24 hours. Muscle glycogen then increased very gradually to normal in the coming days. A contribution to the rapid phase of the re-synthesis is to increase the proportion of glycogen synthase I, an increase in muscle cell membrane permeability to glucose and an increased sensitivity of muscle to insulin. The slow phase of the glycogen synthesis is under the control of the intermediate form of glycogen synthase, which is very sensitive to the activation of the glucose 6-phosphate. The conversion of the enzyme can be attributed to this intermediate to form a plasma insulin concentration elevated after several days of high consumption of carbohydrates constantly exposed to muscle tissue. For optimal performance of the exercise, muscle glycogen stores must be replenished on a daily basis again. For athletes daily average endurance of a carbohydrate consumption of 500 to 600 g is required. This leads to a maximum glycogen from 80 to 100 micromol / g wet weight.

L-Cysteine HCL anhydrous for sale

Product name:L-Cysteine HCL anhydrous

Molecular Formula:C3H8ClNO2S

Formula Weight:157.61912g/mol

Description:It is a white or colorless HCl crystals.L-cysteine (hydrochloride) - anhydrous (E920) used in cooking and preparation flavours.It strong sour taste and very soluble in water.It is a promoter for fermentation.It bread used to prevent the natural fruit juice vitamin C-oxide. It has a detoxification for poison of acrylonitrile aromafic acid. It is to protect against radiation damage and the treatment of bronchitis and liquefy sputum used.

Remifentanil

Remifentanil has a rapid onset and short duration of action, predictable pharmacokinetics / pharmacodynamics, and unlike fentanyl, does not accumulate with repeated or prolonged administration. In this study, predictors of use of remifentanil in surgical patients with impaired hepatic or renal or obesity in the United States, remifentanil was, fentanyl, or the combination.

Testosterone propionate

Product name: Testosterone propionate 
CAS no.: 1255-49-8 ，57-85-2
Molecular Formula: C22H32O3 
Molecular Weight: 344.49 
Appearance: White crystal or white crystalline powder 
Product description: For the treatment of breast cancer, ovarian cancer, uterine fibroids, multiple myeloma and renal cell carcinoma.
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