APIs pour la recherche et les impuretés

2,2',3,4,6,6'-Hexachlorobiphenyl is an analog of polychlorinated biphenyls (PCBs), which are toxic pollutants that have been widely used in industrial applications. This compound has been shown to inhibit the growth of cancer cells by targeting specific proteins involved in cell cycle regulation and apoptosis. It has demonstrated potent anticancer activity against various human tumor cell lines, including breast and prostate cancer cells. 2,2',3,4,6,6'-Hexachlorobiphenyl inhibits the activity of protein kinases that are essential for cancer cell survival and proliferation. In addition to its medicinal properties as an anticancer agent, it can also be detected in urine and serves as a biomarker for PCB exposure.

7β,25-Dihydroxycholesterol is a steroid precursor that is synthesized in the liver and is converted to other steroid hormones. It has been shown to be important in immune function and as a regulator of cholesterol metabolism. In addition, 7β,25-Dihydroxycholesterol can bind to follicle cells and immune cells, activating signalling pathways. This compound has been shown to have an immunosuppressive effect on the humoral immune response by blocking antibody production. The receptor for 7β,25-Dihydroxycholesterol has been identified as GPER1. Knockout mice studies have shown that this receptor plays a role in regulating the number of plasma cells and oxysterols.

Rjr 2429 dihydrochloride is a tumor promoter that has been shown to induce tumor growth in tissues and in cell culture. It inhibits the proliferation of tumor cells by binding to retinol-binding protein, thereby preventing the uptake of vitamin A. Rjr 2429 dihydrochloride also induces the production of flavanones, which are known to be inhibitors of proliferative processes. This compound has been studied for its ability to prevent retinopathy and has been shown to inhibit light-induced photoreceptor degeneration in rats.

Acyclovir Impurity O is an impurity found in the drug Acyclovir. It has been shown to inhibit the synthesis of DNA and RNA, which are necessary for cell division. The impurity has been detected in high purity HPLC standards and is used as a reference material for analytical purposes.
Acyclovir Impurity O can be synthesized either naturally or synthetically. It is an impurity that is regulated by the USP, BP, and EP pharmacopeias.

Glipizide EP Impurity F is a synthetic impurity that is used as a research and development impurity standard. It has high purity and is pharmacopoeia grade. Glipizide EP Impurity F is also a metabolite of the drug product Glipizide and has been shown to have analytical applications for pharmacokinetic studies. It can be synthesized from natural materials or can be custom synthesized depending on the needs of the customer.

α-Phenyl-α-[3-(phenyl-2-pyridinylmethylene)-2,4-cyclopentadien-1-yl]-2-pyridinemethanol is a synthetic compound that is used as an impurity standard in the research and development of drugs. It is also used as a custom synthesis drug product to create a high purity, pharmacopeia grade drug. α-Phenyl-α-[3-(phenyl-2-pyridinylmethylene)-2,4-cyclopentadien-1-yl]-2-pyridinemethanol has been shown to be an active metabolite for the treatment of hypertension. Metabolism studies have shown that this drug is subject to oxidative metabolism by cytochrome P450 enzymes with subsequent oxidation of the pyridine ring. The resulting metabolite can then bind to DNA and inhibit transcription and replication.

Celecoxib hydrazine is an inhibitor of protein kinases that has been shown to have anticancer properties. It is an analog of celecoxib, a non-steroidal anti-inflammatory drug (NSAID) that is commonly used to treat pain and inflammation. Celecoxib hydrazine has been shown to induce apoptosis in human cancer cells and inhibit the growth of tumors in mice. This compound has potential as a medicinal agent for the treatment of cancer, and urine samples from Chinese patients with cancer have been found to contain high levels of this compound. Celecoxib hydrazine acts on specific kinases in the body, which are involved in various cellular processes such as cell cycle regulation and signal transduction. Its ability to selectively inhibit these kinases makes it a promising candidate for targeted therapy against cancer.

Liotrix is a drug that acts as an inhibitor of apoptosis and has been shown to have anticancer properties. It is derived from Chinese urine and works by inhibiting kinase activity, which is essential for the survival of cancer cells. Liotrix is an analog of quetiapine, a drug used to treat schizophrenia and bipolar disorder, and has been found to be effective against various types of tumors in human cancer cell lines. This drug specifically targets kinases, which are enzymes involved in the regulation of cellular processes such as growth and differentiation. By inhibiting these kinases, Liotrix can prevent the proliferation and survival of cancer cells, making it a promising candidate for the treatment of various forms of cancer.