1. NEWS CENTER
        Position:
        Homepage
        >
        NEWS
        An intermediate is an intermediate compound produced during the production of an active pharmaceutical ingredient (API). Pharmaceutical intermediates are by-products produced during the production of APIs.
        When we think of the vast array of raw materials used on the factory floor of electronic equipment manufacturing companies, such as tape auto bounding (TAB), chip-on-film (COF), high-density flexible printed circuits (FPC), office automation equipment, speaker cones, heavy-duty motors, printed circuit boards, and more.
        Fragrances can be broadly classified into two categories: synthetic fragrances and natural fragrances.
        China is the world's largest producer of natural flavors and fragrances. There are about 7,000 varieties of spices in the world, and more than 1,000 kinds of spices are produced in China. The history of spice application is also developed along with the progress of human civilization.
        Flavors are synthetic concentrates with a certain natural aroma, the so-called natural flavors are only the main flavoring agent is naturally extracted, after which other auxiliary agents need to be added artificially.
        Intermediates are a very important type of fine chemical products, in essence, they are a kind of "semi-finished products", mainly used in the synthesis of pharmaceuticals, pesticides, coatings, dyes and fragrances.
        Ranitidine Hydrochloride [ 2022-07-25 ]
        Ranitidine hydrochloride is an organic compound with the molecular formula C13H23ClN4O3S, a whitish or yellowish crystalline powder with an odour, slightly bitter and astringent taste. It is extremely hygroscopic. It is readily soluble in methanol or water or acetic acid, slightly soluble in ethanol and slightly insoluble in chloroform or acetone.
        In this paper, the dehalogenated coupling method of 4-bromo-phthalic anhydride was used, i.e., the reaction of phthalic anhydride with bromosol to form the sodium salt of 4-bromo-phthalic acid, followed by a two-step reaction of dehalogenated coupling and dehydration to produce BPDA.
        BPDA (3,3',4,4'-biphenyltetracarboxylic dianhydride) is the raw material of polyimide resin, one of the super engineering plastics, and is used as an important component material for many products in the information and electronics field such as cell phones and copiers.
        Heliotropine, also known as jasmine aldehyde, chemically known as 3,4-dioxymethylene benzaldehyde (3,4-methylenedioxy benzaldehyde), is widely used in synthetic fragrances, pharmaceuticals, food, daily chemicals, electroplating, etc.
        上一頁
        1
        2

        ABOUT US

        Hebei Haili fragrances Co., Ltd. was established in December 2003, covering an area of 26700m2, with a registered capital of 40.2 million, 281 employees and a sales volume of 198 million in 2019.
        The company specializes in the development, production and sales of chemical APIs, spices, polyimide monomers.

        WHY CHOOSE US

        為什么選擇我們

        CONTACT US

        Jinsha Road, Shijiazhuang Economic and Technological Development Zone

        NEWS LETTER

        We are willing to communicate extensively with friends from all walks of life at home and abroad to work together to create a better future.

        Username used for comment:
        客戶留言
        Description:
        驗證碼

        Copyright: Hebei Haili Fragrances Co.,Ltd       冀ICP備11016002號-1      Powered by www.300.cn

        国产人成无码视频在线,97厕所偷拍超碰欧美老妇,国产 日本 欧美 亚洲 日韩天堂,亚洲老熟妇剃毛茸茸黑森林