Buy Lab Chemicals Online From Manufacturers Suppliers Exporters - Worldofchemicals

chemical-categories

Beta-2-Microglobulin

Beta-2-Microglobulin is a component of MHC class I molecules, which are present on all nucleated cells (excludes red blood cells). It associates not only with the alpha chain of MHC class I molecules, but also with class I-like molecules such as CD1 and Qa. Beta-2-Microglobulin is expressed by the nucleated cells of the body and on many tumor lines.Human Beta-2-Microglobulin is a low molecular weight protein (MW 11600) consisting of a single polypeptide chain of 99 amino acids.It is identical to the small chain of the HLA-A, -B, and -C major histocompatibility complex antigens.In structure and amino acid sequence. Beta-2-Microglobulin resembles the CH3 region of IgG, though it is antigenically distinct. is eliminated via the kidneys. After filtration through the glomeruli. Beta-2-Microglobulin is reabsorbed and catabolized by the proximal tubular cells through endocytosis.It is found at low levels in the serum and urine of normal individuals.

Properties Suppliers
Bial's Reagent

Bial's Reagent a solution of orcinol, fuming hydrochloric acid, and ferric chloride, formerly used to perform Bial's test.Bial's test is a chemical test for the presence of pentoses. It is named after Manfred Bial, German Physician.The components include orcinol, hydrochloric acid, and ferric chloride. A pentose, if present, will be dehydrated to form furfural which then reacts with the orcinol to generate a colored substance.The solution will turn bluish and a precipitate may form. The solution shows two absorption bands, one in the red between Fraunhofer lines B and C and the other near the D line.

Properties Suppliers
Biphenyl

Biphenyl is an aromatic hydrocarbon. It has a distinctively pleasant smell. It is notable as a starting material for the production of polychlorinated biphenyls, which were once widely used as dielectric fluids and heat transfer agents. Biphenyl is also an intermediate for the production of a host of other organic compounds such as emulsifiers, optical brighteners, crop protection products, and plastics.

Properties Suppliers
Bis-(2-chloroethyl)-ether Technical 99

Molecular Weight 143.007 g/molTopological Polar Surface Area 9.2 A^2

Monoisotopic Mass 141.995 g/mol
2,2'-DICHLORODIETHYL ETHER is a clear colorless liquid with a sweet pleasant or nauseating odor. Flash point 131°F. Denser than water and insoluble in water. Toxic by inhalation and skin absorption. Used in cleaning compounds, paints, textile finishing, and as a general solvent.

Properties Suppliers
Bis-Trifluoro acetoxy iodobenzene

• Pummerer-like reactions1,2
• Chemoselective deprotection of dimethoxybenzyl ethers3
• Mediating oxidative cycloisomerization4,5
• Tosyloxylation of anilides6

Properties Suppliers
Bis-Tris Methane

Bis-Tris Methane is generally used as a buffering agent in biochemistry. Bis-Tris Methane is an organic tertiary amine with labile protons having a pKa of 6.46 at 25°C. It is an effective buffer between the pH 5.8 and 7.3.

Properties Suppliers
Bismuth

Bismuth is the most naturally diamagnetic of all metals. It has classically been considered to be the heaviest naturally-occurring stable element. Bismuth compounds are used in cosmetics, medicines, and in medical procedures. Bismuth has unusually low toxicity for a heavy metal. As the toxicity of lead has become more apparent in recent years, alloy uses for bismuth metal, as a replacement for lead, have become an increasing part of bismuth's commercial importance.

Properties Suppliers