Icaridin has been reported to be as effective as DEET without the irritation associated with DEET.According to the WHO, icaridin “demonstrates excellent repellent properties comparable to, and often superior to, those of the standard DEET.” In the United States, the Centers for Disease Control and Prevention recommends using repellents based on icaridin, DEET, or oil of lemon eucalyptus for effective protection against mosquitoes that carry the West Nile virus, Eastern Equine Encephalitis and other illnesses.
Monday, November 18, 2013
About Icaridin
Icaridin, also known as picaridine, KBR 3023, under the INCI name hydroxyethyl isobutyl piperidine carboxylate, and the trade names Bayrepel and Saltidin, is an insect repellent. It has broad efficacy against different insects and is almost colorless and odorless.It has been reported to be as effective as DEET without the irritation associated with DEET.
Icaridin has been reported to be as effective as DEET without the irritation associated with DEET.According to the WHO, icaridin “demonstrates excellent repellent properties comparable to, and often superior to, those of the standard DEET.” In the United States, the Centers for Disease Control and Prevention recommends using repellents based on icaridin, DEET, or oil of lemon eucalyptus for effective protection against mosquitoes that carry the West Nile virus, Eastern Equine Encephalitis and other illnesses.
Icaridin has been reported to be as effective as DEET without the irritation associated with DEET.According to the WHO, icaridin “demonstrates excellent repellent properties comparable to, and often superior to, those of the standard DEET.” In the United States, the Centers for Disease Control and Prevention recommends using repellents based on icaridin, DEET, or oil of lemon eucalyptus for effective protection against mosquitoes that carry the West Nile virus, Eastern Equine Encephalitis and other illnesses.
Daidzein
Daidzein belongs to the group of isoflavones.It act as antioxidants to counteract damaging effects of free radicals in tissues.Isoflavones can act like estrogen in stimulating development and maintenance of female characteristics or they can block cells from using other forms of estrogen.
Daidzein can be converted to its end metabolite S-equol in some humans based on the presence of certain intestinal bacteria. Based on several decades of research, S-equol has potential for significant health benefits.
Daidzein has no classification in the United States; it is not considered to be GRAS (generally recognized as safe) in the United States. It has not been approved as a drug for any indication in the United States. It is a component of foods and dietary supplements derived from soy. Dietary supplements are not regulated as drugs in the U.S., and the labeling of dietary supplements in the U.S. may not describe the supplement as having any drug activity or effectiveness.
Scientists have studied some of the activities of daidzein in their laboratories, working with cells or with animals such as mice. Studies in cells and in animals sometimes give hints as to what a chemical might do when given to humans, but no one can know what a chemical does in humans until the chemical is tested in a clinical trial.
Daidzein can be converted to its end metabolite S-equol in some humans based on the presence of certain intestinal bacteria. Based on several decades of research, S-equol has potential for significant health benefits.
Daidzein has no classification in the United States; it is not considered to be GRAS (generally recognized as safe) in the United States. It has not been approved as a drug for any indication in the United States. It is a component of foods and dietary supplements derived from soy. Dietary supplements are not regulated as drugs in the U.S., and the labeling of dietary supplements in the U.S. may not describe the supplement as having any drug activity or effectiveness.
Scientists have studied some of the activities of daidzein in their laboratories, working with cells or with animals such as mice. Studies in cells and in animals sometimes give hints as to what a chemical might do when given to humans, but no one can know what a chemical does in humans until the chemical is tested in a clinical trial.
Friday, November 8, 2013
1-Methyl-2-pyrrolidinone
CAS:872-50-4
Molecular Formula:C5H9NO
Molecular Weight:99.13g/mol
Description:It is colourless or light yellow liquid with an amine odour. N-Methyl-2-pyrrolidone (872-50-4) does tend to neutralize acids to form salts plus water.N-Methylpyrrolidone is used to recover pure hydrocarbons while processing petrochemicals and in the desulfurization of gases.
About Daidzein
Daidzein belongs to the group of isoflavones.It act as antioxidants to
counteract damaging effects of free radicals in tissues.Isoflavones can
act like estrogen in stimulating development and maintenance of female
characteristics or they can block cells from using other forms of
estrogen.
Daidzein can be converted to its end metabolite S-equol in some humans based on the presence of certain intestinal bacteria. Based on several decades of research, S-equol has potential for significant health benefits.
Daidzein has no classification in the United States; it is not considered to be GRAS (generally recognized as safe) in the United States. It has not been approved as a drug for any indication in the United States. It is a component of foods and dietary supplements derived from soy. Dietary supplements are not regulated as drugs in the U.S., and the labeling of dietary supplements in the U.S. may not describe the supplement as having any drug activity or effectiveness.
Scientists have studied some of the activities of daidzein in their laboratories, working with cells or with animals such as mice. Studies in cells and in animals sometimes give hints as to what a chemical might do when given to humans, but no one can know what a chemical does in humans until the chemical is tested in a clinical trial.
Daidzein can be converted to its end metabolite S-equol in some humans based on the presence of certain intestinal bacteria. Based on several decades of research, S-equol has potential for significant health benefits.
Daidzein has no classification in the United States; it is not considered to be GRAS (generally recognized as safe) in the United States. It has not been approved as a drug for any indication in the United States. It is a component of foods and dietary supplements derived from soy. Dietary supplements are not regulated as drugs in the U.S., and the labeling of dietary supplements in the U.S. may not describe the supplement as having any drug activity or effectiveness.
Scientists have studied some of the activities of daidzein in their laboratories, working with cells or with animals such as mice. Studies in cells and in animals sometimes give hints as to what a chemical might do when given to humans, but no one can know what a chemical does in humans until the chemical is tested in a clinical trial.
Thursday, November 7, 2013
Hexamethylphosphoramide
Hexamethylphosphoramide, often abbreviated HMPA, is a phosphoramide (i.e. an amide of phosphoric acid) having the formula [(CH3)2N]3PO. This colorless liquid is a useful polar aprotic solvent and additive in organic synthesis.
HMPA is a speciality solvent for polymers, gases, and organometallic compounds. It improves the selectivity of lithiation reactions by breaking up the oligomers of lithium bases such as butyllithium. Because HMPA selectively solvates cations, it accelerates otherwise SN2 reactions by generating more "naked" anions. The basic oxygen centers in HMPA coordinate strongly to Li+.
HMPA is a ligand in the useful reagents based on molybdenum peroxide complexes, e.g., MoO(O2)2(HMPA)(H2O) is used as an oxidant in organic synthesis.
HMPA is only mildly toxic but has been shown to cause nasal cancers in rats.Still, many organic chemists regard HMPA as an exceptionally hazardous molecule due to its known carcinogenicity, and avoid its use when possible. HMPA can be degraded to less toxic compounds by the action of hydrochloric acid. For laboratory uses it can be substituted by the less carcinogenic solvent DMI.
HMPA is a speciality solvent for polymers, gases, and organometallic compounds. It improves the selectivity of lithiation reactions by breaking up the oligomers of lithium bases such as butyllithium. Because HMPA selectively solvates cations, it accelerates otherwise SN2 reactions by generating more "naked" anions. The basic oxygen centers in HMPA coordinate strongly to Li+.
HMPA is a ligand in the useful reagents based on molybdenum peroxide complexes, e.g., MoO(O2)2(HMPA)(H2O) is used as an oxidant in organic synthesis.
HMPA is only mildly toxic but has been shown to cause nasal cancers in rats.Still, many organic chemists regard HMPA as an exceptionally hazardous molecule due to its known carcinogenicity, and avoid its use when possible. HMPA can be degraded to less toxic compounds by the action of hydrochloric acid. For laboratory uses it can be substituted by the less carcinogenic solvent DMI.
N-Acetylneuraminic acid
N-Acetylneuraminic acid (Neu5Ac or NANA) is the predominant sialic acid found in mammalian cells.
This negatively charged residue is found in complex glycans on mucins and glycoproteins found at the cell membrane. Neu5Ac residues are also found in glycolipids, such as gangliosides, a crucial component of neuronal membranes found in the brain.
Along with involvement in preventing infections (mucus associated with mucous membranes — mouth, nose, GI, respiratory tract), Neu5Ac acts as a receptor for influenza viruses, allowing attachment to mucous cells via hemagglutini.
Neu5Ac is also important in the biology of a member of pathogenic bacteria as it can used either as a nutrient, providing both carbon and nitrogen to the bacterium, or in some pathogens, can be activated and placed on the cell surface. Bacteria have evolved transporters for Neu5Ac to enable them to capture it from their environment and a number of these have been characterised including the NanT protein from Escherichia coli, the SiaPQM TRAP transporter from Haemophilus influenze and the SatABCD ABC transporter from Haemophilus ducreyi.
Wednesday, November 6, 2013
N-(3-Aminopropyl) methacrylamide
Simultaneous grafting of N-isopropylacrylamide (NIPAAm) and N-(3-aminopropyl) methacrylamide hydrochloride (APMA) on polypropylene (PP) was investigated for obtaining interfaces that are stimuli-responsive under physiological conditions. A pre-irradiation method was optimized tuning the γ-irradiation dose, reaction time, temperature, and monomers concentrations. FT-IR ATR and XPS analysis of the grafted copolymers evidenced a greater content in NIPAAm than in APMA; the APMA/NIPAAm ratio increasing with the concentration of APMA in the reaction medium and when the grafting was carried out in 1 M NaNO3. The grafted films were characterized regarding their thermal properties (DSC and TGA) swelling behavior and contact angle. Immersion of the pre-irradiated films in 1 M NIPAAm/0.5 M APMA aqueous solution rendered PP-g-(1NIPAAm-r-0.5APMA) which exhibited rapid and reversible transitions showing a LCST around the physiological temperature
Formula:
(C7H14N2O)HCL
Molecular Weight: 178.7Melting Point: 122-124º
Inhibitor: uninhibited
References: For use of N-(3-Aminopropyl)methacrylamide hydrochloride to make reductively biodegradable hydrogels for tissue engineering,
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