Pyridine hydrobromide, also known as pyrimidine hydrobromide, is an English name. It is often used as a series of vancomycin drugs, such as: cefotaxime, cefpirin, ceftazidime and other intermediates, sometimes also used as papermaking auxiliaries. It is a kind of pharmaceutical intermediate with wide application. Pyridine hydrobromate belongs to strong acid system, which requires high

The current price of methanol dropped significantly in October. At present, the positive factors of methanol industry are gradually emerging, and the future market is expected to be warmer. Import profit fell rapidly At the beginning of October, the methanol import profit once surged above 200 yuan / ton, and the methanol import volume rose

I. price trend In October, the propane market rose slightly, mainly in a narrow range of shocks. The average price of propane Market at the beginning of the month was 3925 yuan / ton, and the average price at the end of the month was 4042.5 yuan / ton, with an increase of 2.99% in

Last week, LLDPE’s main 2001 contract was weak, pp12001 contract was weak, and methanol’s main 2001 contract was down. The short-term plastic and PP are in the game of maintenance and resumption of production and demand recovery, maintaining a volatile trend. The methanol base surface is empty and the logical pressure bearing disk surface is

Hydroxytyrosol is a natural polyphenolic compound, which mainly exists in olive fruits and branches in the form of esters. Hydroxytyrosol is widely used in health products and food additives, but its extremely high pharmacological effect has been less used. In recent years, scientists began to attach importance to the medicinal value of hydroxy tyrosol, and

Hydroxytyrosol, also known as 3,4-dihydroxyphenyl ethanol, CAS No. 10597-60-1, mainly exists in olive leaves. Olive oil and waste water from olive oil processing also have certain content. The use diversity of hydroxy tyrosol has been widely recognized in recent years. Firstly, it is applied to health care products of beauty products, which is helpful for

Hydroxytyrosol, alias 3,4-dihydroxyphenyl ethanol, molecular formula C8H10O3, is a natural polyphenol compound with strong antioxidant activity, mainly in the form of esters in olive fruits and leaves. Hydroxytyrosol can also be derived from olive oil and wastewater from olive oil processing, and has a variety of biological and pharmacological activities. Hydroxytyrosol has a safe and

Olin was conducting a turnaround at its 748,000 mt/year ethylene dichloride plant in Freeport, Texas, a source familiar with company operations said. The turnaround was expected to reduce EDC oversupply when prices have been under pressure amid seasonally high chlor-alkali rates, market sources said. Olin, the world’s largest chlor-alkali producer, did not respond to an inquiry

Protocatechuic acid (PCA), also named 3,4-dihydroxybenzoic acid. It exists in the leaves of Euphorbiaceae ferns, llex and other plants, and it has antimicrobial effect. Protocatechuic acid has a density of 1.54g/cm3 and a melting point of about 200 C. It is soluble in hot water, ethanol, ether, acetone and ethyl acetate, slightly soluble in cold

The global refined zinc market was in a 305,000 mt deficit of metal for the first nine months of 2018, while total inventories fell by 64,000 mt over the period, according to preliminary data compiled by the International Lead and Zinc Study Group released Wednesday. ILZSG noted that Chinese trade data for the months through