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Home > Analytical Chemistry > Standard (Find 112 items)

Analytical Chemistry

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Standard

Bromide

(24959-67-9)
Bromide can be prepared by dissolving bromine or hydrobromic acid in water and reacting alkaline bromides. For example, sodium bromide can be obtained by reacting hydrobromic acid with sodium hydroxide, and then pure bromide can be obtained by the alcohol acid method or cation exchange method. Bromide is used to make various bromine compounds and can also be used in industries such as medicine, dyes, and fragrances. It is the basic raw material for making various inorganic bromides such as sodium bromide, potassium bromide, lithium bromide and calcium bromide and some alkyl bromides such as methyl bromide and ethyl bromide. Bromide is used in medicine to synthesize sedatives and anesthetics. Bromide is also a good solvent for some metal minerals and is used for the refining of high-purity metals.

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Benzofuran

(271-89-6)
manufacture of coumarone-indene resins.

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Butyl ether

(142-96-1)
Dibutyl ether is a chemical compound belonging to the ether family with the molecular formula of C 8H 18O. It is colorless, volatile, and flammable liquid and has peculiar ethereal smell.Liquid dibutyl ether is lighter than water. On the other hand, the vapor is heavier than air. It is not soluble in water, but it is soluble in acetone and many other organic solvents. Due to this property, dibutyl ether is used as solvent in various chemical reactions and processes. For example, phenyllithium is

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benazepril hydrochloride

(215447-89-5)
(R)-Benazepril Hydrochloride is a stereoisomer of Benazepril (B119750), used as an antihypertensive; angiotensin converting enzyme inhibitor.

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Bemotrizinol

(187393-00-6)
Bemotrizinol is a broad-spectrum UV absorber, absorbing both UVA and UVB. Bemotrizinol is added to various sunscreens to absorb UV rays.

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Bromochloroacetic acid

(5589-96-8)
DryPowder

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Benzophenone 9

(76656-36-5)
New efficient ultraviolet absorber

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Benzamide, N-[5-chloro-4-[(4-chlorophenyl)cyanomethyl]-2-methylphenyl]-2-hydroxy-3,5-diiodo-, sodium salt (1:1)

(61438-64-0)
A broad-spectrum anthelmintic, used against nematode infection.

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Benoxacor

(98730-04-2)
Herbicide safener.

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Benzoic acid, 4,4′-[[6-[[4-[[(1,1-dimethylethyl)amino]carbonyl]phenyl]amino]-1,3,5-triazine-2,4-diyl]diimino]bis-, 1,1′-bis(2-ethylhexyl) ester

(154702-15-5)
Iscotrizinol is a triazine based organic compound that readily absorbs UVA and UVB radiation. Iscotrizinol is commonly found in sunscreen and other sun care products.

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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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