2017年2月16日星期四

Silicon Carbide Nanopowder 20-30nm


Product Name: Silicon carbide (Beta) nanopowders 97-99%, 20-30nm

CAS-No. 409-21-2

Specifications:
Chemical formula: SiC beta,
Purity: 97-99%
[O] & lt; 0.6-1%
Free [Si] <0.2%
APS: 20-30nm
SSA: 80-90 m² / g
Specific gravity: 3.22 g / cm³
Bulk density: 0.08 g / cm³
Crystal cell: Kubisch
Color: light green

Main Features:

SiC ceramic material is harder than oxide ceramic, self-lubricant, anti-temperature, anti-creep, anti-oxidation, low thermal expansion, microwave sensor, IR semiconductor materials Radiation and so on. SiC nanopowders provides higher activity, lower sintering temperature and different irradiation or adsorption of electron and thermic light and conductivity.

Some applications:
1) Nanostructured materials: it provides hard, superior ductility and strength, etc., mechanical and self-lubricating properties, corrosion / oxidation, in the fields of metallurgy, petrochemical, mechanical, air / For example bearings or other wear parts, liquid injectors, crucible modules, high performance and frequency, semiconductor devices.
2) SiC nanoparticle coating on the surface of tools, models or functional components with advantages above.
3) Nanocomposites with improved performance in metal, ceramic and polymer matrices.
4) New nucleation / refining or sintering of metals or alloys, or polymer or ceramic or microcrystalline glass materials for smaller particle sizes with improved mechanical properties.

Somatostatin for sale

English name
 
Chemical name
Ala-Gly-Cys-Lys-Asn-Phe-Phe-Trp-Lys-Thr-Phe-Thr-Ser-Cys-OH
CAS NO.:
38916-34-6;51110-01-1
Molecular formula
C76H104N18O19S2
Molecular weight
1637.8782
Characters
white or off-white crystalline powder
Application range
widely applied in pharmaceutical, food, health care and other industries.
Use
Used to treat low blood pressure, etc
Packing
BOTTLE

What is Nectin-2

Nectin-2, a major protein component of adherent junctions (SJA), found between Sertoli cells and germ cells in the seminiferous epithelium. Recent studies have shown that the expression of the Nektin-2 gene is crucial for the maintenance of normal spermatogenesis in the testes, as male knockout mice lacking the Nektin-2 gene are sterile and have morphologically abnormal spermatozoa. However, the molecular mechanisms that control their basal transcription remain poorly understood. Has been demonstrated by the use of Sertoli and embryonic cell lines (TM4- and GC-2SPD (ts) cells) in transient transfection studies, that the minimal mouse Nektin-2 promoter between -316 and -211 nucleotides was The translation initiation site). In this region, two putative Sp1 motifs and a CRE, AP1 and AP2 motif were identified. Mutations studies showed that these two Sp1 motifs interact synergistically with the CRE motif, but not the AP1 and AP2 motifs at transcription of the Nektin-2 gene in both GC and TM4-2SPD (ts) - to regulate the cells. EMSA has been determined that an AP-1 consensus sequence can inhibit the formation of DNA-protein complexes with the CRE motif, suggesting an interaction between the AP-1 (c-Jun) and CREB transcription factor within Of the CRE suggests. Overexpression of the CREB and c-Jun protein, but not c-Fos, also significantly enhances promoter activity, suggesting that the CREB and c-Jun protein are the essential transcription factors that are involved in the Regulation of Neptin-2 transcription of the gene. Immunoprecipitation of chromatin showed that in vivo CREB, c-Jun and Sp1-family proteins were linked to the mouse Nektin-2 promoter. Tested tubule analysis confirmed that cyclic coincident expressions of CREB and nectin-2 with the case of adherens restructuring of junction between Sertoli cells and germ cells. Cross-talk between CREB, c-Jun and the Sp1-family protein is probably a great transcription machinery to drive Nektin-2 expression to drive in Sertoli cells.

2017年2月15日星期三

DL-Valine price

Product name:DL-Valine
Molecular Formula:C5H11NO2

Molecular Weight:117.15

Density:1.31

Melting point:283.5-285 °C
Water solubility:68 g/L

Application:
DL-Valine, N-(2-chloro-4-(trifluoromethyl)phenyl)-, cyano(3-phenoxyphenyl)methyl ester has been used as an insecticide.

Corn Tween 80 agar price


Product name:Corn Tween 80 agar
Packing specification:Slope * 10branch

Application:
Observation of chlamydospores and pseudohyphae.

4-Iodo-2,5-dimethoxyphenethylamine price


Product Name: 4-iodo-2,5-dimethoxyphenethylamine
CAS: 69587-11-7
Molecular formula: C10H14INO2
Molecular Weight: 307.13 g / mol
Description: 4-iodine-2,5-dimethoxyphenethylamine is a synthetic drug that is abused for its hallucinogenic effects. It is used for the production of pharmaceutical intermediates, pesticide intermediates, dyes, biochemical reagents, and other specialty chemicals.

Cinacalcet price


Product Name: cinacalcet
CAS: 226256-56-0
Molecular formula: C22H22F3N
Molecular Weight: 357.412
Product Description: This product is already used in the treatment of dialysis patients suffering from chronic renal insufficiency (CKD) of secondary parathyroid function; For the treatment of hypercalcemia of parathyroid carcinoma; Patients severe hypercalcemia HPT gentleman who can not accept parathyroidectomy.