The C-3 hydroxyl group is esterified to phosphoric acid. The resulting compound, called phosphatidate, is the simplest phosphoglycerate. Only small amounts of phosphatide are present in membranes. However, it is a key intermediate in the biosynthesis of the other phosphoglycerides. Figure 7: Biosynthesis of Phospholipids Sphingosine Sphingosine is an amino alcohol that contains a long, unsaturated hydrocarbon chain.
For the experiment the amount of catalyst was around 0,5g skeletal copper and 0,15 g copper chromite. In the experiment there was always stoichiometric or excess of H2 to methyl formate. The equilibrium conversion was calculated from different H2/Methyl formate ratio, where the side reaction was ignored. Calculated equilibrium conversion
It is also used as a plasticizer and in film coatings Glycerin is used as a plasticizer of gelatin in the production of soft-gelatin capsules. Stability and Storage Conditions Glycerin is hygroscopic. Pure glycerin is not prone to oxidation by the atmosphere under ordinary storage conditions but it decomposes on heating with the evolution of toxic acrolein. Mixtures of glycerin with water, ethanol (95%), and propylene glycol are chemically
Chemical properties Pyridine is miscible with water and virtually all organic solvents.  It is weakly basic, and with hydrochloric acid it forms a crystalline hydrochloride salt that melts at 145–147 °C.  Most chemical properties of pyridine are typical of aheteroaromatic compound Molecular properties Pyridine has a conjugated system of six π electrons that are delocalized over the ring. The molecule is planar and, thus, follows the Hückel criteria for aromatic systems. In contrast to benzene, the electron density is not evenly distributed over the ring, reflecting the negative inductive effect of the nitrogen atom.
RESULTS & DISCUSSIONS PREFORMULATION: S.NO API CHARACTERISATION RESULTS 1 Physical Appearance Mycophenolate mofetil white to off-white crystalline powder 2 Melting point 93-94ºC 3 solubility Freely soluble in acetone, soluble in methanol, and sparingly soluble in ethanol. Table 3: Characterization of API Calibration Curve of Mycophenolate mofetil: Calibration Curve of Mycophenolate mofetil in pH 7.4 PBS Solvent pH 7.4 phosphate buffer Saline (PBS) Wave length 253 nm Unit for concentration mcg/mL Table 4: parameters for Calibration curve Table 5: Calibration data of Mycophenolate mofetil in pH 7.4 PBS S.NO Concentration (mcg/mL) Absorbance 1 0 0 2 2 0.185 3 4 0.345 4 6 0.526 5 8 0.722 6 10 0.907 Calibration Curve of Mycophenolate mofetil:
Free chlorine is the chlorine available to sterilise the water and is usually represented by hypochlorous acid and hypochlorite ions. When a solution containing free chlorine is exposed to ultraviolet light both hypochlorous acid and hypochlorite ions are broken down as shown below: 2OC〖l^-〗_((aq.))+u.v.→2C〖l^-〗_((aq. ))+〖O_2〗_((g)) 2HOCl_((aq.))+u.v.→2HCl_((aq. ))+〖O_2〗_((g)) When chloramine is exposed to high-energy ultraviolet light, the Cl-N or Cl-H bonds will be broken. Then, shorter wavelength ultraviolet light (less than 230nm) will break down water molecules into hydroxyl radicals that will oxidize the chloramines rapidly.
9. Theoretical yield = (150.22g/mol)(3.5 x 10^-3 mol of nucleophile) = 0.525 g Actual yield = 0.441 g, Percent Yield = (0.441g/0.525g) x 100% = 84% 10. Percent recovery from recrystallization = (0.172g/0.441g) x 100% = 38% 11. The data table provided below obtained melting point data for crude product, pure product, and mixture of the pure and 4-tert-butylbenzyl. 12.
Figure 2. Representation of 1.3-butadiene (mw: 54.09 g/mol) Styrene: A colorless to yellowish liquid that produce polystyrene by homopolymerization. Styrene is a derivative of benzene and could be found in small quantities in plants and foods. It is slightly soluble in water and very soluble in ethanol, acetone and carbon disulfide. Its rate of polymerization is low at room temperature but increases at higher temperatures.
(8) Sucrose contains Covalent bonds and Polar Covalent bonds. (9) Sucrose is not an Acid, Base or Salt; it is just a regular compound. (10) Purpose: Sucrose has many benefits, but is not limited to: Monoclonal antibody stabilization (mAbs), Media supplementation, Antibody drug conjugate (ADC), Stem cell preservation, Peptide and Vaccine stabilization. In the pharmaceutical industry, sucrose is an additive to medicinal drugs to make them more palatable when a drug tastes utterly horrible and makes it difficult to intake based upon these conditions. Sucrose is found in both prescription and non-prescription drugs and is responsible for the flavored medications often given to children.
In addition, methyl ether (**) can be generated as cis- and trans- isomers, but was isolated as a single isomer. This compound was stable against heat at 60 degrees and was not transformed into 5-trifluoromethyl oxazole (**), whereas compound (*) was unstable, turned into easily rearrangement oxazole (**) in the middle of isolation. To confirm this rearrangement of compound (*), when we heated at 60 degrees for 30min, the compound (*) was observed to convert into oxazole (**)