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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.

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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.

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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.

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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.

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Bis-Trifluoro acetoxy iodobenzene

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

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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.

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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.

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