Wednesday, October 30, 2013

What is 2-Ethoxy-1-naphthoic acid?


CAS:2224-00-2

Molecular formula:C13H12O3

Molecular weight:216.23

Properties:white to pale brown crystalline powder

Application: Nafcillin intermediate

Product description:2-Ethoxy-1-naphthoic acid is a white to pale brown crystalline powder,it used as the Nafcillin intermediate.

Monday, October 21, 2013

Dosage and Administration of Cefodizime


Cefodizime can be administered intramuscularly, or by intravenous bolus or infusion. The a lot of frequently acclimated developed dosage in analytic trials has been 2 or 4g circadian in 1 or 2 disconnected doses, either intramuscularly or intravenously. For apprehensible lower urinary amplitude infections individual doses of 1 or 2g accept been effective. In patients with gonorrhoea 0.25 to 1g as a individual dosage has resulted in analytic and bacteriological cure ante of around 100%. Dosage should be adapted in patients with renal impairment, with a best of cefodizime 2g circadian accustomed to patients with a creatinine approval of 0.6 to 1.8 L/h (10 to 30 ml/min), and bisected this dosage to patients with a creatinine approval of < 0.6 L/h (< 10 ml/min). In patients ability haemodialysis, cefodizime 1 to 2g should be administered afterwards anniversary dialysis cycle. A dosage of 60 mg/kg/day (typically in 3 to 4 disconnected doses) is frequently acclimated for the analysis of infections in paediatric populations, except in bacterial meningitis area 200 mg/kg/day (in 4 disconnected doses) has been administered.

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Thursday, October 17, 2013

1 - baton rouge - 2, 3 - dimethylimidazolium hexafluorophosphate basic information





Chinese name: 1 - ethyl - 2, 3 - dimethyl imidazole six fluoride phosphate
Chinese synonyms: 1 - ethyl - 2, 3 - dimethyl imidazole six fluoride phosphate
English name: 1 - baton rouge - 2, 3 - DIMETHYLIMIDAZOLIUM HEXAFLUOROPHOSPHATE
English synonyms: 1 - baton rouge - 2, 3 - DIMETHYLIMIDAZOLIUM HEXAFLUOROPHOSPHATE;1-ethyl-2,3-dimethylimidazolium hexafluorophosphate
CAS no. : 292140-86-4
Molecular formula: C7H13F6N2P
Molecular weight: 270.16
EINECS no. :
Related categories: Ionic liquid; Chemical short; Imidazolium; Ionic Liquids; Specialty short
Mol files: 292140-86-4. Mol


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From:Catalyst chemistry

Wednesday, October 16, 2013

What is Oleylamine ?


CAS Number: 112-90-3

Purity: 68%

Molecular Weight: 267.49

Molecular Formula: C18H37N

Appearance: Colorless to yellow liquid

Physical State: Liquid

Storage: Store at room temperature

Melting Point: 18-26 ºC

Boiling Point: 348-350 ºC

Density: 0.813 g/ml at 25 ºC

Refractive Index: n20/D 1.4596

 

Oleylamine is a primary amine of the alkene (''Z'')-Octa-9-decene and agnate in anatomy to the blubbery acerbic oleic acid. It is a accepted reagent in the actinic amalgam of nanoparticles. It can action both as a bread-and-butter for the acknowledgment admixture and as a analogous abettor to balance the apparent of the particles. Most commercially accessible oleylamine is abstruse grade, with alone 70% purity. This top akin of birthmark makes the acknowledgment altitude with oleylamine difficult to carbon and standardize.

 

Oleylamine has an LD50 Intraperitoneal of 888 mg/kg in mice. It is awful acerb and readily causes derma burns. Appropriate claimed careful accessories is recommended at all times while application this chemical.

Monday, October 14, 2013

What is Methyl Laurate?


Chemical properties:

Colorless clear oily liquid,can be dissolved with organic solvents,insoluble in water.

Use:

For organic synthesis intermediates.

As gas chromatography stationary phase, food additives and organic synthesis reagents.

 

Production method:

Lauric acid esterification with methanol derived. The lauric acid, anhydrous methanol and concentrated sulfuric acid was heated at reflux for 18h, the reaction was poured into water, separated carbonate layer. Washed with water, saturated sodium bicarbonate solution and water. After drying distillation, collecting 261-263 fractions, namely 12 acetate, yield 81%.

Storage:

Stored in cool and dry place. Kept in airproof condition.
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Methyl Laurate

Friday, June 28, 2013

What is MelanotanⅡAcetate?




Chinese name: MelanotanⅡAcetate
Product parameters: MF / Structure: 61,263,305
MW: 61263305
Density (g / l): 61263305
Content (%): 98%
Specifications: mg-kg class
Brand: GL Biochem
Description: MT-1 Name acetate Melanotan Ⅱ Melanotan Ⅱ Acetate CAS NO 75921-69-6 Molecular Weight 1646.88 Product parameters C78H111N21O19 Appearance Appearance White powder White powder Appearance of solution Solution Appearance Transparent Transparent colorless solution color Colour of solution pH Colorless PH provides rotation Specific Optical Rotation (c = 0.5,95% HAc) provides Purity Purity (by HPLC) ≥ 98.00% ~ 99.90% total impurity content total Impurities (by HPLC) ≤ 2.00% ~ 0.05% single Impurity content single Impurity (by HPLC) ≤ 0.50% ~ 0.08% water content water Content (Karl Fischer) ≤ 4.80% acetate content of acetate Content (by HPLC) ≤ 6.80% peptide peptide Content (by% N) ≥ 88.00% amino acid composition amino Acaid Composition of the theoretical value ± 10% ± 10% of theoretical determination (anhydrous, hydrochloric acid) Assay (By anhydrous, acetic acid-free) 95.0% ~ 105.0% solubility solubility provide additional HPLC profiles available, mass spectrometry, synthesis reports.
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From:poly-peptides

Tuesday, May 21, 2013

2 – Acrylamido–2 Methylpropane sulfonic acid applications


2 – Acrylamido–2 Methylpropane sulfonic acid as a white apparent powder, melting point 185 ℃, hardly sour, with a able hygroscopicity. Such as damp, AMPS monomer cocky polymerization can occur. Its baptize band-aid is acidity, acrid in two methyl amide, partially acrid in methanol, ethanol, baffling in acetone. Stable at allowance temperature. In aqueous solution, monomer hydrolysis acceleration is actual slow, but have to add inhibitor, to anticipate its cocky polymerization; sodium band-aid at pH greater than 9 conditions, with accomplished hydrolysis resistance; homopolymers with acceptable thermal stability. AMPS monomer can be copolymerized homopolymer, can aswell be. AMPS accession in baptize calefaction for an boilerplate of 22000 cal / mol, baptize and two DMF can be acclimated as polymerization medium.PAM is an important oilfield chemicals, but its poor microburst stability, automated abasement if pumping serious; Alkali poor, decumbent to precipitation; temperature, acerbic and poor. Therefore, polyacrylamide adapted oil has become a hot analysis field. Study begin that, AMPS monomer as a modifier aftereffect is actual obvious. AMPS and methacrylic acid, acrylamide terpolymer fabricated ​​for able-bodied adhesive admixture, can play a top retarding effect, can at top temperature and top alkali environments; and N, N-dimethylacrylamide the copolymers can be acclimated in oil wells adhesive accident agent; And calcium lignin sulfonate, acrylamide affix copolymer is an accomplished adhesive dispersant, aboriginal backbone agents, reinforcing agents; AMPS and acrylic acid, tetrahydrophthalic acid, lignin sulfonic acerbic affix copolymer, can be Preparation of conduct aqueous dispersants and acceptable achievement of anti-calcium stabilizers, bendability reducer, aqueous accident agent.

2 – Acrylamido–2 Methylpropane sulfonic acid amalgam with acrylonitrile, isobutene, angry sulfuric acerbic as raw material, the angry sulfuric acerbic is added to the admixture of acrylonitrile and isobutylene in the attendance of assorted additives, in absolute acknowledgment to access the accomplished product. China AMPS analysis and assembly started late, AMPS advanced ambit of uses, and adopted manufacturers less, this gives Chinese assembly and development brings acceptable acceptable luck. At present the calm appliance of AMPS is absolutely weak, mainly in the oil acreage and the acreage of baptize treatment, constructed technology and adopted photograph is earlier than difference, so the artefact abstention is not high, aswell affects the after artefact applications. AMPS is the blanket industry accomplished achievement of the modifying agent, adhering and blanket abettor achievement convalescent agent. AMPS copolymer acrylic acerbic alternation anion electrophoretic acrylic or blanket the abject resin, can acutely advance the blur gloss, backbone and durability. AMPS and polyhydroxy admixture heating and melting the admixture is hot cook adhesive. AMPS and vinylidene chloride – acrylic adhering copolymer acquired water-soluble polymer coated assimilate the polyolefin film, can advance the calefaction sealing performance.AMPS is accomplished achievement coatings industry modifiers, adhesives and blanket agents achievement improver. AMPS copolymer is acclimated as the acrylic anion electrophoretic acrylic blanket of the abject adhering or curing, can decidedly advance the blur gloss, backbone and acclimate resistance. AMPS and polyhydroxy admixture is a admixture of acrimonious and broiled hot-melt adhesive. AMPS and vinylidene chloride - acrylic adhering acquired by copolymerizing a water-soluble polymer is activated to the polyolefin film, the calefaction sealing achievement can be improved.

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from: Chemistry chemicals