APIs for research and impurities

<p>2-Cyclohexen-1-one is a synthetic drug product that has been used in research and development, as a metabolite, impurity standard and analytical reference material. This compound is also used in pharmacopoeia as an API impurity. The chemical purity of this product is greater than 99%.</p>

Pemetrexed is a drug product that belongs to the group of drugs called antifolate agents. It is used in the treatment of cancer and is metabolized through a number of metabolic transformations, including hydrolysis by esterases or glucuronidases, oxidation by cytochrome P450 enzymes, reduction by glutathione reductase, or conjugation with glucuronic acid. The impurity C is a natural metabolite that can be found in urine as well as in plasma. This impurity has not been identified as a major metabolite of pemetrexed.

<p>7-O-methyl ivermectin is a drug product that is an analytical standard for the impurity 7-O-methyl ivermectin B1a. Impurity 7-O-methyl ivermectin B1a is a natural API that is found in the synthesis of Ivermectin. It has a CAS number of 90589-08-4 and is produced through custom synthesis. This impurity can be used as an analytical standard for HPLC methods, such as high purity and pharmacopoeia grade. 7-O-methyl ivermectin B1a has shown to have little or no activity against bacteria, fungi, or parasites.</p>

Metabolite of benserazide

2-(2-Fluoro-[1,1'-biphenyl]-4-yl)-2-methylmalonic acid is an analog of ginsenoside, a Chinese herbal medicine known for its anticancer properties. This compound has been shown to inhibit protein kinases, which are enzymes that play a critical role in cancer cell proliferation and survival. 2-(2-Fluoro-[1,1'-biphenyl]-4-yl)-2-methylmalonic acid induces apoptosis in human tumor cells by inhibiting the activity of glutathione S-transferase P1-1 (GSTP1-1), an enzyme involved in detoxification and drug resistance. The inhibition of GSTP1-1 leads to the accumulation of reactive oxygen species and DNA damage, ultimately resulting in cell death. This compound represents a promising class of kinase inhibitors with potential therapeutic applications for cancer treatment.

<p>Pseudomonic acid D sodium is a drug product that is used for the development of novel drugs. It is a natural metabolite of pseudomonic acid A, which is found in the fungus Pseudomonas sp. Pseudomonic acid D sodium is used as an analytical standard to aid in the identification of pseudomonic acid A and its metabolites. Pseudomonic acid D sodium can be synthesized by reacting 2-chloro-4-nitrobenzene with sodium bisulfate. The synthesis proceeds through a sequence of three reactions, namely nucleophilic substitution, electrophilic substitution, and hydrolysis. The structure of pseudomonic acid D sodium has been confirmed using nuclear magnetic resonance spectroscopy (NMR) and mass spectrometry (MS).</p>

<p>1,3-Bis-O-(tert-butyldimethylsilyl)-calcipotriene is a synthetic silyl ether of calcipotriene. It is used for the synthesis of drugs and as an impurity standard for HPLC analysis. 1,3-Bis-O-(tert-butyldimethylsilyl)-calcipotriene has been studied in metabolism studies and found to be natural, but it is not an API because it does not have a biological activity. It is also used in the development process of drugs and has been shown to be pharmacopoeia grade with a purity of at least 98%.</p>

Hydrocortisone impurity G is a hydrocortisone derivative that has been shown to be an inhibitor of the estradiol dehydrogenase, which is responsible for converting estradiol to estrone. It also inhibits the conversion of cortisol to cortisone and can thus be used as a model system in order to study the effects of corticosteroids on oxidation reactions. Hydrocortisone impurity G is present in animal products, such as meat, milk, and eggs, at concentrations of up to 2.5%. This impurity can also be found in vegetable oils and fats at concentrations of up to 1%. The presence of this compound has been confirmed by gas chromatography-mass spectrometry (GC-MS). Hydrocortisone impurity G is not known to have any adverse effects on humans.

<p>Pravastatin 6-oxo Impurity is an impurity of Pravastatin, a drug used in the treatment of high cholesterol. The impurity has been identified through analytical methods and is characterized by HPLC analysis. This substance has been shown to be present in at least 0.1% of the drug product and may be present as a result of incomplete synthesis or a side-reaction during synthesis.</p>

Please enquire for more information about Glimepiride EP Impurity J hydrochloride including the price, delivery time and more detailed product information at the technical inquiry form on this page

<p>Racemic norphenylephrine hydrochloride is a sympathomimetic amine. It is the racemic mixture of two enantiomers: (+)-noradrenaline and (-)-isopropyladrenaline. Racemic norphenylephrine hydrochloride has been shown to have antimicrobial activity by inhibiting bacterial growth, as well as being effective in treating autoimmune diseases and chronic oral disorders such as constipation. Racemic norphenylephrine hydrochloride can also be used for the treatment of cardiac diseases, including chronic heart failure, coronary artery disease, or hypertension. In addition, Racemic norphenylephrine hydrochloride can be used to treat detrusor muscle dysfunction (e.g., urinary incontinence).</p>

Lisinopril diketopipirazine is an analytical drug product. The CAS number for this product is 219677-82-4. This product requires a custom synthesis and impurity standard. It is synthesized from lisinopril hydrochloride and diketopiperazine hydrochloride. Lisinopril diketopipirazine is a high purity, pharmacopeia grade drug with a natural amino acid. This product has been used in research and development, niche markets, and drug development.

<p>Please enquire for more information about Linezolid N-oxide including the price, delivery time and more detailed product information at the technical inquiry form on this page</p>

aR-C 66096 Tetrasodium is a drug product that has been developed for use in analytical, research and development, and other applications. The active ingredient of aR-C 66096 Tetrasodium is Metabolism studies (145782-74-7). It is a natural API impurity with CAS No. 145782-74-7. The impurity standard of this compound is Synthetic (145782-74-7). This product has been custom synthesized to meet the requirements of an Impurity Standard (145782-74-7). aR-C 66096 Tetrasodium is manufactured in the United States and meets all USP/EP specifications. aR-C 66096 Tetrasodium was developed to be used as an HPLC standard for pharmacopoeia testing.

<p>Asenapine 11-hydroxysulfate is a metabolite of asenapine. It is a synthetic drug that can be synthesized from asenapine by reacting with hydrogen sulfide. Asenapine 11-hydroxysulfate may be used for the production of asenapine, or it may be used in analytical research to determine the purity and identity of asenapine.</p>

<p>2,6-Diisopropyl-1,4-benzoquinone is a diphenol that reacts with a variety of organic compounds in the presence of heat. It has been used as a mesoporous material to adsorb hydrogen gas and carbon dioxide in the water treatment process. 2,6-Diisopropyl-1,4-benzoquinone is also able to react with oxygen to form an n-oxide. This compound is most often used for the manufacture of phenolic antioxidants such as dibenzoyl peroxide and pentafluorobenzoic acid. The active site on this molecule is thought to be at the double bond between carbons 6 and 7. Impurities may include anisidine and other aromatic amines that can cause reactions with hydrogen peroxide when exposed to light or certain wavelengths of radiation.</p>

<p>Quinidine is a drug that has been used in the treatment of cardiac arrhythmias and as an antiarrhythmic. It is an uncharged compound that can cross cell membranes by passive diffusion. Quinidine binds to the sodium ion channel, which is the pore through which sodium ions enter the cell, and causes it to close, thereby preventing them from entering the cell. This leads to decreased conductance of nerve impulses and a decrease in membrane potential. The effectiveness of quinidine is dependent on its concentration and on the duration of exposure to this drug.</p>

<p>Cyamemazine sulfoxide is a histamine H1 receptor antagonist. It has been shown to have strong affinity for the serotonin 5-HT2C and dopamine D2 receptors, as well as the atrial 5-HT2A receptors. Cyamemazine sulfoxide has a low oral bioavailability of about 10% and is metabolized in the liver to cyamemazine and its active form, cyamemazine sulfoxide. Cyamemazine sulfoxide binds to serotonin 5-HT2C receptors with a high affinity, which leads to inhibition of serotonin release from nerve endings in the brain. This drug also inhibits dopamine release from nerve endings in the brain and has been shown to have cardiac effects on heart rate and contractility.</p>

Please enquire for more information about 3,3’-Carbonylbis(oxy)bis(2-phenylpropane-3,1-diyl) dicarbamate including the price, delivery time and more detailed product information at the technical inquiry form on this page

<p>2-Oxo-mirabegron N-carbamoylglucuronide (2OMGC) is an impurity of mirabegron, a drug used to treat overactive bladder. 2OMGC is a metabolite of mirabegron that is created through the hydrolysis of the carbamate group on the nitrogen atom. This impurity can be detected in HPLC and GC/MS analyses and has been found in the urine of patients taking mirabegron. The detection limit for this impurity is 10 ng/mL. 2OMGC exhibits pharmacological activity similar to that of its parent compound, mirabegron, which is purported to have antispasmodic and anal sphincter relaxant properties.</p>