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Home > Analytical Chemistry > Standard (Find 82 items)

Analytical Chemistry

Standard

4-Methylimidazole

(822-36-6)
4-Methylimidazole is a monomethylated imidazole that can be used as a building block in the preparation of a wide range of biologically active compounds. 4-Methylimidazole is a product which results from the interaction of reducing sugars with ammonia. 4-Methylimidazole showed convulsant activity in animals and is listed as a possible carcinogen.

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4-Methylbenzophenone

(134-84-9)
Benzophenone estrogenicity toxicity structure activity.

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4-Amino-N-5-isoxazolylbenzenesulfonamide

(7758-79-4)
disodium phosphate is a hydroscopic inorganic salt, it absorbs moisture that is then released to the skin. In dry climatic conditions, however, it may draw moisture from the skin and release it to the air, aggravating dryness. Without water, disodium phosphate may cause slight irritation. It can also be used in a cosmetic as a fragrance, and to adjust pH or keep pH stable. Finally, it can be selected to reduce corrosion of metallic materials used for product packaging. N-(Isoxazol-5-yl)sulphanil

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4-Chloro-2-methylaniline

(95-69-2)
Used as pesticide and pharmaceutical intermediate

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4-Hydroxy-6-methyl-1,3,3a,7-tetraazaindene

(2503-56-2)
Reactant for the synthesis of: • ;Ruthenium(II)-Hmtpo complexes1• ;Dihydroorotate dehydrogenase inhibitors with antimalarial activity2Reactant for the Vilsmeier reaction of conjugated carbocycles and heterocycles3Investigations of the pharmacological activity caused by binding to HIV TAR RNA4Additive to study the space charge layer in silver bromide microcrystals5

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4H-Pyrano[2,3-b][1,4]benzodioxin-4-one, decahydro-4a,7,9-trihydroxy-2-methyl-6,8-bis(methylamino)-, [2R-(2α,4aβ,5aβ,6β,7β,8β,9α,9aα,10aβ)]-, sulfate (1:1) (salt), tetrahydrate

(64058-48-6)
Spectinomycin is a broad-spectrum antibiotic that has a strong inhibitory effect on Gram-positive and negative bacteria, and it can inhibit Staphylococcus aureus, Hemolytic streptococcus, Pneumococcus, Proteus vulgaris, Pneumoniae, and Mycoplasma. Microplasma and some solitary bacteria are effective.

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In the analysis work, it is often necessary to use a compound of good quality and accurate content, which is used as a comparison for detection control, or used to calibrate the instrument. This compound is called a standard. Or standard. The standard product refers to the standard substance used to determine the potency of biological products. The production department must provide the standard product expressed in units (μ) of its potency when it is approved as a quality standard for biological products. According to the application, the standard products for inspection can be divided into biological standard products for biological verification of biological products, endocrine drugs, antibiotics and so on.
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