Produits biochimiques et réactifs

<p>Applications Bis[2,5-Dimethoxy-4-(p-nitrophenylazo)benzenediazonium] Chlorozincate can be used for test kits to detect and identify narcotics. It has also been assessed for its suitability as oxygen reduction electrocatalysts and sonoelectrocatalysts.<br>References Callahan, M.D., et.al., U.S., 13,(2017); Sljukic, B., et.al., Electroanalysis, 17,1025-1034,(2005);<br></p>

<p>Impurity Levodopa EP Impurity A; Levodopa USP Related Compound A<br>Stability Hygroscopic<br>Applications 6-Hydroxy-L-DOPA (Levodopa EP Impurity A; Levodopa USP Related Compound A) is the 6-hydroxy derivative of the amino acid L-DOPA (D533751) with neurotoxic properties. Studies show that exogenously administered 6-Hydroxy-L-DOPA is biotransformed by amino acid decarboxylase to the highly potent and catecholamine-selective neurotoxin, 6-Hydroxydopamine. The treatment of 6-Hydroxy-L-DOPA in rats resulted in the stimulation of acetylcholinesterase.<br>References Jaim-Etcheverry, G. et al.: Brain Res., 100, 699 (1975); Kostrzewa, R.M. et al.: Amino Acids, 14, 175 (1998); Berthet, A. et al.: J. Neurosci., 29, 4829 (2009);<br></p>

<p>Applications 2-Propylmalonic acid (cas# 616-62-6) is a useful research chemical.<br></p>

<p>Applications Arainosine is used in the preparation of 5'-O-D-valyl adenine 9-β-D-arabinofuranoside, a potential prodrug for improving the oral bioavailability of the antiviral agent Vidarabine (V305030).<br>References Shen, W., et al.: Nucleos. Nucleot. Nucl., 28, 43 (2009)<br></p>

<p>Applications L-Ornithine-2,3,3,4,4,5,5-d7 hydrochloride is the labelled analogue of L-Ornithine Hydrochloride (O695550), a non-essential amino acid for human development but is required intermediate in arginine biosynthesis. L-Ornithine is found in virtually all vertebrate tissues as well as incorporated into proteins, such as tyrocidine. Isolation from chicken excreta.<br>References Fattori, D., et al.: J. Med. Chem., 50, 550 (2007), Gomez-Alonso, S., et al.: J. Agric. Food Chem., 55, 608 (2007), Subramaniam, R., et al.: Bioorg. Med. Chem. Lett., 18, 3333 (2008),<br></p>

<p>Applications 2-(Hydroxyamino)acetic Acid is a novel lactase inhibitor.<br>References Hattori, M., et al.: J. Insect Physiol., 51, 1359 (2005); Murao, S., et al.: Biosci. Biotech. Biochem., 56, 987 (1992)<br></p>

<p>Applications Dabsyl Chloride is used for HPLC amine derivatization to detect proteins and other molecules.<br> Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package<br>References Romero, R. et al.: Chromatograph., 51, 404 (2000); Ikeda, M. et al.: Amino Acids., 8, 401 (1995):<br></p>

<p>Stability Light Sensitive, Temperature Sensitive<br>Applications The biologically active form of vitamin D3. Calcium regulator; vitamin (antirachitic); antihyperparathyroid; antineoplastic; antipsoriatic.<br> Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package<br>References Myrtle, J.F., et al.: J. Biol. Chem., 245, 1190 (1970), Lawson, D.E.M., et al.: Nature, 230, 228 (1971), Norman, A.W., et al.: Science, 173, 51 (1971), Suda, T., et al.: Vitamins, 45, 175 (1972), Muindi, J.R., et al.: Clin. Pharmacol. Ther., 72, 648 (2002),<br></p>

<p>Applications Isotope labelled 2-Bromoethanol is an widely used intermediate in organic synthesis.<br> Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package<br>References Tian, Z., et al.: Int. J. Quant. Chem., 111, 631 (2011); Thayer, F.K., et al.: Org. Syntheses., 6, (1926);<br></p>

<p>Stability Hygroscopic<br>Applications A sulfhydryl reactive homobifunctional crosslinking reagent.Spacer Arm: 13.3 Angstroms<br>References Han, J.C., et al.: Anal. Biochem., 220, 5 (1994)<br></p>

<p>Applications Antioxidant 1098 (cas# 23128-74-7) is used as a modifier in polymer stabilization.<br>References Li, C.; et al.: J. Appl. Poly. Sci., 134 (2017).<br></p>

<p>Applications Disodium NADP is used in method for preparing 2,4-Diamino Butyric Acid by enzyme catalysis.<br>References Yu, T., et al.: Faming Zhuanli Shenqing, (2020);<br></p>

<p>Stability Hygroscopic<br>Applications 2-Amino-6-mercaptopurine-9-D-riboside Hydrate (cas# 345909-25-3) is a compound useful in organic synthesis.<br></p>

<p>Applications N6-Methyladenosine is the most common internal modification of eukaryotic mRNA. The result of this modification is specifically recognized mRNA in the cytoplasm which regulates mRNA stability.N6-Methyladenosine is made when a protein complex containin the writer enzyme METTL3 adds a methyl group to adenosine. Two different eraser enzymes ALKBH5 and FTO can remove a methyl group to turn m6A bach into adenosine.<br>References Miura, G. et al.: Nat. Chem. Biol., 11, 903 (2015); Deng, X. et al.: Nucl. Acids Res., 43, 6557 (2015); Chem. and Eng. News, p.35, Feb. 18, 2019<br></p>

<p>Applications Trypan Blue is an azo based, hydrophilic, tetrasulfonated blue acid dye widely utilized for assessing cell viability. As an easy method to determining the viability of cells, Trypan Blue will stain dead cells with permeable membranes blue, while the dye is excluded by most living cells and their intact membranes thereby allowing visual determination of living versus dead cells. Although Trypan Blue is predominately used for assessing cell viability of cultured cells, other applications for this dye have been reported. In rat abdominal organ slices Trypan Blue has been utilized to determine cell viability as well as islet cell cluster cell viability from caprine pancreatic samples. Dyes and metabolites.<br>References Bonnefille, P. et al. 2010. Fundam Clin Pharmacol. PMID: 21121944; Han, T.H. et al. 2010. J Acupunct Meridian Stud. 3(4): 241-248. PMID: 21185538; Saadatnia, G. et al. 2010. Trop Biomed. 27(1): 125-130. PMID: 20562822; Hani, H. et al. 2010. Xenotransplantation. 17(6): 469-480. PMID: 21158948<br></p>

<p>Applications E-64d is an inhibitor of cathepsins B and L as well as a potential inhibitor of calpain. E-64d has been shown to inhibit lysosomal proteases. E-64d has been used in combination with Prepstatin A to interfere with autolysosomal digestion. E-64d displays neurovascular and neuronal protective effects after focal cerebral ischemia in rats.<br>References Wilcox, D. et al.: Biochem. J., 285, 495 (1992); McGowan, E.B. et al.: Biochem. Biophys. Res. Comm., 158, 432 (1989); Tsubokawa, T. et al.: J. Neurosci. Res., 84, 832 (2006);<br></p>

<p>Applications Campestanol can be used as analyte in biological and analytical studies for the determination of 22 natural brassinosteroids in a minute sample of plant tissue by UHPLC-ESI-MS/MS.<br>References Tarkowska, D., et al.: Anal. Bioanal. Chem., 408, 6799-6812 (2016)<br></p>