ChemFaces is a professional high-purity natural products manufacturer.
Product Intended Use
1. Reference standards
2. Pharmacological research
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* Packaging according to customer requirements(5mg, 10mg, 20mg and more). We shipped via FedEx, DHL, UPS, EMS and others courier.
More articles cited ChemFaces products.
Arch Pharm Res.2014 Oct 18.Oncotarget. 2016 Aug 19Jou. of Agromedicine and Med. Sci.2018;Journal of Analytical ChemistryAug. 2017;ScientificWorldJournal. 2014 Feb 9.
Nutrients.2017 Dec 29;Curr Eye Res.2018 Jan;J Exp Bot. 2016 May 18.Neuropharmacology.2018 Mar 15;J Nat Prod. 2017 Apr 28;
Sci Rep. 2018 Jan 11;Current Pharmaceutical AnalysisIssue 5, 2017Molecules. 2017 Feb 21;PLoS One. 2017 Mar 9;
Our products had been exported to the following research institutions and universities, And still growing.
FORTH-IMBB (Greece)Complutense University of Madrid (Spain)University of Malaya (Malaysia)Vin?a Institute of Nuclear Scien... (Serbia)
University of Otago (New Zealand)Periyar University (India)University of Oslo (Norway)Nanjing University of Chinese Me... (China)
Korea Institute of Oriental Medi... (Korea)University of Maryland (USA)Universiti Kebangsaan Malaysia (Malaysia)
|| Inokosterone is an analgesic drug. It also shows high insect moulting hormone activity. |
|Arch Biochem Biophys. 2011 Sep 1;513(1):27-35. |
|C-26 vs. C-27 hydroxylation of insect steroid hormones: regioselectivity of a microsomal cytochrome P450 from a hormone-resistant cell line.[Pubmed: 21763268]|
|Hydroxylation of steroids at one of the side chain terminal methyl groups, commonly linked to C-26, represents an important regulatory step established in many phyla. Discrimination between the two sites, C-26 and C-27, requires knowing the stereochemistry of the products. 26-Hydroxylation of the insect steroid hormone 20-hydroxyecdysone by a microsomal cytochrome P450 was previously found to be responsible for hormonal resistance in a Chironomus cell line mainly producing the (25S)-epimer of 20,26-dihydroxyecdysone.
METHODS AND RESULTS:
Here, we studied the 25-desoxy analog of 20-hydroxyecdysone, ponasterone A, to elucidate the stereochemistry of the expected 26-hydroxy product, Inokosterone, which occurs as C-25 epimers in nature. We identified the predominant metabolite as the C-25 R epimer of Inokosterone on comparison by RP-HPLC with the (25R)- and (25S)-epimers the stereochemistry of which was confirmed by X-ray crystallography. (25R)-Inokosterone was further oxidized to the 26-aldehyde identified by mass spectroscopy, borohydride reduction and metabolic transformation to 26-carboxylic acid. The (25S)-epimers of Inokosterone and its aldehyde were minor products. With 20-hydroxyecdysone as substrate, we newly identified the (25R)-epimer of 20,26-dihydroxyecdysone as a minor product.
In conclusion, the present stereochemical studies revealed high regioselectivity of the Chironomus enzyme to hydroxylate both steroids at the same methyl group, denoted C-27.
||The roots of Achyranthes bidentata Blume.
||Chloroform, Dichloromethane, Ethyl Acetate, DMSO, Acetone, etc.
||Providing storage is as stated on the product vial and the vial is kept tightly sealed, the product can be stored for up to 24 months(2-8C).
Wherever possible, you should prepare and use solutions on the same day. However, if you need to make up stock solutions in advance, we recommend that you store the solution as aliquots in tightly sealed vials at -20C. Generally, these will be useable for up to two weeks. Before use, and prior to opening the vial we recommend that you allow your product to equilibrate to room temperature for at least 1 hour.
Need more advice on solubility, usage and handling? Please email to: firstname.lastname@example.org
||The packaging of the product may have turned upside down during transportation, resulting in the natural compounds adhering to the neck or cap of the vial. take the vial out of its packaging and gently shake to let the compounds fall to the bottom of the vial. for liquid products, centrifuge at 200-500 RPM to gather the liquid at the bottom of the vial. try to avoid loss or contamination during handling.
Recent ChemFaces New Products and Compounds
Recently, ChemFaces products have been cited in many studies from excellent and top scientific journals
Cell. 2018 Jan 11;172(1-2):249-261.e12. doi: 10.1016/j.cell.2017.12.019.PMID: 29328914
Mol Cell. 2017 Nov 16;68(4):673-685.e6. doi: 10.1016/j.molcel.2017.10.022.PMID: 29149595
Scientific Reports 2017 Dec 11;7(1):17332.doi: 10.1038/s41598-017-17427-6.PMID: 29230013
Molecules. 2017 Oct 27;22(11). pii: E1829.doi: 10.3390/molecules22111829.PMID: 29077044
J Cell Biochem. 2018 Feb;119(2):2231-2239.doi: 10.1002/jcb.26385. PMID: 28857247
Phytomedicine. 2018 Feb 1;40:37-47. doi:10.1016/j.phymed.2017.12.030PMID: 29496173
Calculate Dilution Ratios(Only for Reference)
* Note: If you are in the process of experiment, it's need to make the dilution ratios of the samples. The dilution data of the sheet for your reference. Normally, it's can get a better solubility within lower of Concentrations.
|Arch Pharm Res. 2012 Aug;35(8):1449-55. |
|High performance liquid chromatography used for quality control of Achyranthis Radix.[Pubmed: 22941488]|
|To establish a standard of quality control and to identify reliable Achyranthis Radix, three phytoecdysones including ecdysterone (1), 25R-Inokosterone (2) and 25S-Inokosterone (3) were determined by quantitative HPLC/UV analysis.
METHODS AND RESULTS:
Three phytoecdysones were separated with an YMC J'sphere ODS C(18) column (250 mm × 4.6 mm, 4 μm) by isocratic elution using 0.1% formic acid in water and acetonitrile (85:15, v/v%) as the mobile phase. The flow rate was 1.0 mL/min and the UV detector wavelength was set at 245 nm. The standards were quantified by HPLC/UV from Achyranthes bidentata Blume and Achyranthes japonica Nakai, as well as Cyathula capitata Moq. and Cyathula officinalis Kuan, which are of a different genus but are comparative herbs. The method was successfully used in the analysis of Achyranthis Radix of different geographical origin or genera with relatively simple conditions and procedures, and the assay results were satisfactory for linearity, recovery, precision, accuracy, stability and robustness. The HPLC analytical method for pattern recognition analysis was validated by repeated analysis of eighteen A. bidentata Blume samples and ten A. japonica Nakai samples.
The results indicate that the established HPLC/UV method is suitable for quantitation and pattern recognition analyses for quality evaluation of Achyranthis Radix.