D-(-)-PANTOLACTONE-manufacture,factory,supplier from China

(Total 24 Products for D-(-)-PANTOLACTONE)
Products Description of D-(-)-PANTOLACTONE CAS#599-04-2Hygroscopic crystals (benzene/petroleum ether, or obtained by sublimation). Melting point 80 (92°C), boiling point 130°C/2.4kPa, easily soluble in water, soluble in ethanol, ether, chloroform, carbon disulfide, benzene.
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Products Description of D-Glucal CAS#13265-84-4D-glucosene, also called D-glucosene, is a pharmaceutical intermediate that can be prepared from pentaacetyl glucose through a three-step reaction.
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Products Description of D-(-)-ERYTHROSE CAS#583-50-6D-erythrose-4-phosphate is an intermediate in the enzymatic conversion of carbohydrates.D-(-)-ERYTHROSE Chemical PropertiesMelting point <25℃Boiling point 144.07°C (rough estimate)alpha D20 +1° -14.5° (3 days, c = 11)density 1.0500 (rough estimate)refractive index 1.498storage temp. 2-8°Csolubility Methanol, Waterform syruppka12.49±0.20(Predicted)color light yellowWater Solubility Fully miscible in water.Sensitive HygroscopicMerck 14,3690BRN 1721698CAS DataBase Reference
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Products Description of 2-Deoxy-D-glucose CAS#154-17-62-Deoxy-D-glucose is an anti-metabolite of D-glucose. It has the effects of interfering with the synthesis of virus-specific glycoproteins, inhibiting the proliferation of herpes simplex virus, RAN and DNA enveloped viruses, and cancer cells. At present, antiviral and anticancer drugs prepared from 2-deoxy-D-glucose have been clinically used in the treatment of herpes simplex virus and cancer, and medical health products and anti-aging cosmetics prepared from 2-deoxy-D-glucose have also been launched on the market.
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Products Description of 1,2-O-Isopropylidene-Alpha-D-Xylofuranose CAS#20031-21-41,2-O-isopropylidene-α-D-xylofuranose can be used to prepare 3-deoxy-1,2-O-isopropylidene-D-xylofuranose. 3-Deoxy-1,2-O-isopropylidene-D-xylofuranose is a chiral intermediate for the synthesis of atorvastatin to produce the pharmacological side chain.
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2,3,4,6-Tetra-O-benzyl-D-glucopyranose Chemical PropertiesMelting point 145-149 °C(lit.)Boiling point 672.4±55.0 °C(Predicted)density 1.22±0.1 g/cm3(Predicted)storage temp. Sealed in dry,Store in freezer, under -20°Csolubility Soluble in chloroformpka11.87±0.70(Predicted)form Solidcolor White to Off-Whiteoptical activity[α]20/D +49±2°, c = 2% in dioxaneInChIKeyOGOMAWHSXRDAKZ-BKJHVTENSA-NSMILESOC1O[C@H](COCC2=CC=CC=C2)[C@@H](OCC2=CC=CC=C2)[C@H](OCC2=CC=CC=C2)[C@H]1OCC1=CC=CC=C1CAS DataBase Reference4132-28-9(CAS DataBase Reference)Safety InformationHazard
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Products Description of D(+)-Glucose CAS#50-99-7Glucose is a six-carbon sugar containing an aldehyde group with a molecular formula of C6H12O6. It is the most important monosaccharide in living organisms. Its main function is to provide energy required for physiological activities of the body. It is known that the complete oxidation of 1 mol of glucose releases energy of 2870kJ (686kCal), accounting for 70% to 80% of the total energy required by the body.
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D-Camphorsulfonic acid CAS# 3144-16-9D-camphor sulfonic acid is a chiral organic sulfonic acid with unique molecular structure. It is an important intermediate in organic synthesis and has been widely used in drug synthesis, asymmetric catalysis and other fields. Due to its chiral properties, it can be used to induce asymmetric reactions to help synthesize compounds with specific chiral configurations.
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Products Description of 5-Bromo-4-chloro-7H-pyrrolo[2,3-d]pyrimidine CAS#22276-95-5 5-Bromo-4-chloro-7H-pyrrolo[2,3-d]pyrimidine belongs to nitrogen heterocyclic.      5-Bromo-4-chloro-7H-pyrrolo[2,3-d]pyrimidine  Chemical PropertiesMelting point 221-225℃Boiling point 221.0±50.0 °C(Predicted)density 2.15±0.1 g/cm3(Predicted)storage temp. under inert gas (nitrogen or Argon) at 2-8°Cform solidpka9.43±0.20(Predicted)color YellowWater Solubility Slightly soluble in water.InChIKeyOXLMTRZWMHIZBY-UHFFFAOYSA-NCAS DataBase Refer
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Products Description of α-galactosidaseCAS#9025-35-8α-Galactosidase is a glycoside hydrolase that catalyzes the hydrolysis of α-galactosidic bonds. It can hydrolyze D-galactose residues bound by α-1,6 bonds at the non-reducing end, as well as oligosaccharides such as honey, raffinose, stachyose and verbascose.
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Products Description of AGAROSE CAS#9012-36-6Agarose is a chain-like neutral polysaccharide composed of D-galactose and 3,6-endo-L-galactose.
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Products Description of Flumethrin CAS#69770-45-2The industrial product is a clear brown liquid with a slight special odor. The specific density d is 1.013, and the vapor pressure is 1.33×10-8Pa (20°C). It is insoluble in water, but soluble in organic solvents such as methanol, acetone, and xylene.
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Products Description of Maltose CAS#69-79-4Maltose is the abbreviation of maltobiose, also known as D-maltose and maltose. A disaccharide formed by connecting, condensing, and dehydrating two molecules of α-D-glucose through α-1,4 glycosidic bonds. There is also a free hemiacetal hydroxyl group in the molecule, which is a reducing sugar. Like glucose, it can make Doron's reagent and Fehling's reagent react positively.
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Products Description of Pentaerythritol triacrylate CAS#3524-68-3For photosensitive filmPentaerythritol triacrylate Chemical PropertiesMelting point 15℃Boiling point 359.71°C (rough estimate)density 1.18 g/mL at 25 °C (lit.)refractive index n20/D 1.483(lit.)Fp >230 °Fstorage temp. Inert atmosphere,Room Temperaturesolubility Chloroform (Slightly), Methanol (Slightly)pka13.63±0.10(Predicted)form Liquidcolor ColorlessSpecific Gravity1.16-1.19Water Solubility Immiscible with water.Sensitive HygroscopicBRN 6598752Stabilit
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Products Description of Meglumine CAS#6284-40-8MeglumineChoosing a suitable counter ion for a drug is particularly important for improving the solubility and bioavailability of the drug. Meglumine (N-methyl-D-glucosamine, MChemicalbookeglumine) is a counter ion widely used to improve the solubility of drugs.
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Products Description of Alkylsulfonic phenyl ester CAS#91082-17-6White crystalline powderAlkylsulfonic phenyl ester Chemical Propertiesrefractive index n20/D 1.500Fp 210 °Cstorage temp. 2-8°Ccolor APHA: ≤350 Factory and Equipment ShowFast delivery timeInventory 2-3 working days New production 7-10 working days
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Products Description of Carnitine CAS#541-15-1Carnitine is a type of B vitamins. Its structure resembles amino acids, so some people classify it as amino acids. Its main function is to help transport long-chain fatty acids to provide energy. This can prevent fat from accumulating in the heart, liver and skeletal muscle. Artificially synthesized carnitine has three forms: L-isomer, D-isomer and racemate, and L-carnitine has the best effect. L-carnitine is a compound with multiple physiologically active functions.
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Products Description of Polymethylene polyphenyl polyisocyanate CAS#9016-87-9Brown transparent liquid with pungent odor.Polymethylene polyphenyl polyisocyanate Chemical PropertiesBoiling point 392 °C5 mm Hgdensity 1.2 g/mL at 25 °C(lit.)vapor density 8.6 (vs air)refractive index n20/D 1.634Fp >230 °Fstorage temp. Refrigerator, Under inert atmospheresolubility DMSO (Sparingly), Ethyl Acetate (Slightly), Methanol (Soluble)form Oilcolor Yellow to OrangeStability:Stable.
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Products Description of Iodomethane CAS#74-88-4Methyl iodide is a halogenated hydrocarbon with the molecular formula CH3I, MeI. It is a monoiodine substitute of methane. The boiling point is 42.4℃, the relative density is 2.279 (20/4℃), it is a volatile liquid with high density at room temperature, the dipole moment is 1.59D, and the refractive index is 1.5304 (20°C, D), 1.5293 (21°C, D). Methyl iodide is miscible with common organic solvents, slightly soluble in water, soluble in ethanol and ether. The pure product is colorless and has a special odor.
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Products Description of (-)-(R)-Mandelic Acid CAS#611-71-2D-mandelic acid is a polar molecule. Because it contains hydroxyl and carboxyl groups, the molecule has a certain degree of hydrophilicity. Since D-mandelic acid is a chiral molecule, its physical and chemical properties are affected by the stereostructure of its molecule. In addition, the acid-base properties of D-mandelic acid are also affected by the molecular structure.
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Products Description of Monoethanolamine CAS#141-43-52-Hydroxyethylamine, also known as ethanolamine, is an organic compound with the chemical formula C2H7NO.Monoethanolamine Chemical PropertiesMelting point 10-11 °C(lit.)Boiling point 170 °C(lit.)density 1.012 g/mL at 25 °C(lit.)vapor density 2.1 (vs air)vapor pressure 0.2 mm Hg ( 20 °C)refractive index n20/D 1.454(lit.)Fp 200 °Fstorage temp. Store at +15°C to +25°C.solubility Soluble in benzene, ether, carbon tetrachloride.pka9.5(at 25℃)form Liquidcolor
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Products Description of 3,4-Dibromothiophene CAS#3141-26-23,4-Dibromothiophenol is a colorless to pale yellow liquid with a boiling point of 221-222°C and a melting point of 4-5°C.3,4-Dibromothiophene Chemical PropertiesMelting point 4-5 °C (lit.)Boiling point 221-222 °C (lit.)density 2.188 g/mL at 25 °C (lit.)refractive index n20/D 1.640(lit.)Fp >230 °Fstorage temp. Keep in dark place,Sealed in dry,Room Temperatureform Liquidcolor Clear colorless to yellowSpecific Gravity2.188BRN 107642InChIKeyVGKLVWTVCUDISO-UHFFFAOYSA-NCAS DataBa
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Products Description of Octadecanethiol CAS#2885-00-9Octadecanethiol, molecular formula C18H38S.Octadecanethiol Chemical PropertiesMelting point 30-33 °C(lit.)Boiling point 204-210 °C11 mm Hg(lit.)density 0.847 g/mL at 25 °C(lit.)vapor pressure <0.5 hPa (20 °C)refractive index n20/D 1.3610Fp 55 °Fstorage temp. Store below +30°C.form Crystalline Solidpka10.49±0.10(Predicted)Specific Gravity0.832 (30℃)0.847color WhiteWater Solubility InsolubleBRN 1811934Exposure limitsNIOSH: Ceiling 0.5 ppm(5.9
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Products Description of SILICA CAS#10279-57-9Used as filler for paints and coatings, rubber reinforcing agent, plastic tackifier and thixotropic agent, thickener for synthetic grease and silicone greaseSILICA Chemical PropertiesMelting point 1610 °C(lit.)Boiling point >100 °C(lit.)density 2.6 g/mL at 25 °C(lit.)refractive index n20/D 1.544(lit.)storage temp. no restrictions.form tablets (~0.5 g each)Water Solubility Insoluble in water.Exposure limitsNIOSH: IDLH 3000 mg/m3; TWA 6 mg/m3EPA Substance Registry SystemSilica, h
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New Use of Poly-L-lactic Acid as Shape Memory MaterialBackground techniqueBiopolymer is an important medical polymer material with good biodischarge and bioabsorbability advantages. It has been widely used in outdoor fixation, tissue engineering stents, operation lines, drug control, etc. Polylactic acid is usually synthesized by the ring polymerization method of lactide. According to the difference of optical ring-opening polymerization, the lactide properties are divided into D-lactide properties, L-lactide properties and DL-lactide properties.
New Use of Poly-L-lactic Acid as Shape Memory MaterialBackground techniqueBiopolymer is an important medical polymer material with good biodischarge and bioabsorbability advantages. It has been widely used in outdoor fixation, tissue engineering stents, operation lines, drug control, etc. Polylactic acid is usually synthesized by the ring polymerization method of lactide. According to the difference of optical ring-opening polymerization, the lactide properties are divided into D-lactide properties, L-lactide properties and DL-lactide properties.
Sorbitol has a chemical formula of C6H14O6 and also has 2 optical isomers, D as well as L. It is the main photosynthetic item of Rosaceae plants and also is primarily made use of as a sugar. It has a trendy pleasant taste as well as a sweet taste of regarding Fifty percent of sucrose, calorific worth is similar to sucrose.What is Sorbitol?Sorbitol has a great wonderful taste, as well as its sweet taste is about 50% -70% of that of sucrose. 1g of sorbitol creates 16.7 kJ of heat in the human body.
The sugar that people often eat in daily life is extracted from sugarcane, sugar beet and other plants. There are also some substances in the plant kingdom that are sweeter than sucrose. Stevia, native to South America, is 200 to 300 times sweeter than sucrose; the West African bamboo skewers in the tropical forests of Africa are 3000 times sweeter than sucrose; there is also a vine plant of Dioscorea nigra with the sweetness of the fruit. 90,000 times that of sucrose.However, these substances, which are thousands of times sweeter than sucrose, are rarely seen.
Vitamin K is an essential fat-soluble nutrient, and also our body needs it to accomplish healthy and balanced blood coagulation and also other functions. It has 2 forms:Vitamin K1, (phylloquinone) is discovered in green leafy vegetables, veggies and some veggie oils.Vitamin K2, (menaquinone) exists in dairy products, fermented foods and pet products.You can likewise obtain vitamin K supplements, but scientific trials reveal that the vitamin K we extract from food is a lot more effective for our body.
Dimethyl disulfide (DMDS, CAS# 624-92-0) has recently witnessed a remarkable increase in market demand and continuous progress in related research.Soaring Market Demand   DMDS is extensively utilized in multiple fields, which is a crucial factor contributing to its rapidly growing market demand.In the agricultural sector, it serves as an effective and eco-friendly soil fumigant, playing a vital role in nematode control.
Breaking News: Innovative Advancement in Sodium Sulfur BatteriesResearchers at Osaka Metropolitan University have achieved a significant breakthrough in the development of all-solid-state sodium batteries, a promising alternative to lithium-ion batteries for next-generation energy storage systems.
Hydroxyethylidene diphosphonic acid characteristics:HEDP(Hydroxyethylidene Diphosphonic Acid) is an organic phosphoric acid and corrosion inhibitor, which can form stable complexing agent with iron, copper, zinc and other metal ions, and can dissolve oxides on the metal surface. HEDP can still play a good role in corrosion and scale inhibition at 250°C, is still very stable at high pH values, not easy to be hydrolyzed, and not easy to decompose under general light and heat conditions.
Urotropine, also known as hexamethylenetetramine, is a polycyclic heterocyclic compound with similar structure to adamantane, and the molecular formula is c6h12n4. Urotropine is a white crystal, which can be prepared by the reaction of formaldehyde and ammonia. The molecule contains four mutually fused triazane rings. It is limited soluble in water and easily soluble in most organic solvents.Urotropine is widely used. It can be used as raw materials for organic synthesis, analytical chemical reagents, antibiotics and fuels, and also has many uses in chemical production.
Calcium chloride, CAS#10043-52-4, as a common chemical substance, plays an indispensable role in numerous industries due to its unique physical and chemical properties.In the road construction and maintenance industry, Calcium chloride, CAS#10043-52-4 is the "guardian" of winter road safety. In winter, in the northern regions of the United States, Calcium chloride, CAS#10043-52-4 is often used as a de-icing agent. It is spread on the roads to quickly melt the snow and prevent ice formation, ensuring traffic safety.
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