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Take 8.7g (0.05 mol) 3-carbonyl-4-methyl-tetrahydrothiophene-2-carboxylic acid methyl ester, add a certain amount of acetonitrile, stir and heat to reflux, then add 3.5g (0.05 mol) hydroxylamine hydrochloride to react.

8-Quinolineboronic acid phosphorescent molecular switch (8-QBA-PMS) in the“off" state emitted weak room temperature phosphorescence (RTP) of 8 -QBA on the acetylcellulose membrane (ACM) with theperturbation of Pb2+.

Ulipristal acetate finished product was authorised (as Esmya and Ulipristal Acetate Gedeon Richter) for treating moderate to severe symptoms of uterine fibroids (non-cancerous tumours of the womb) in women who had not reached the menopause.

Maxmedchem, as one of the pharma intermediates companies, is specializing at the production of 3-bromo-5-chlorobenzoic acid with the unique technique and equipment.

L-Arginine acetylsalicylate is a double salt of aspirin and arginine, which has antipyretic, analgesic, and anti-inflammatory effects. It not only maintains the original efficacy of aspirin, but also changes its insoluble nature.

Tauroursodeoxycholic acid, more commonly known as TUDCA, is present in the bile excreted by our liver and stored in the gallbladder for obvious reasons. It is the taurine-conjugated form of ursodeoxycholic acid (UDCA).

Leucine is an amino acid that can be found in many proteins and is considered necessary for the absorption of many different nutrients. Leucine comes in the form of nutritional supplements and is popular among athletes.

Our human body needs a lot of nutrients, of which we need to supplement a variety of vitamins. Everyone should know vitamin C and vitamin E, as well as the vitamin B family. Different types of vitamins bring different benefits to the body.