LMFC
Calcium L-5-methyltetrahydrofolate is the calcium salt of L-5-methyltetrahydrofolic acid, which is the predominant, naturally occurring form of folate. It is synthesized by reduction of folic acid to tetrahydrofolic acid followed by methylation and diastereoselective crystallization (in water) of L-5-methyltetrahydrofolic acid as its calcium salt. The product contains variable amounts of water of crystallization
Sparingly soluble in water and very slightly soluble or insoluble in most organic solvents; soluble in alkaline solutions
PVA
Polyvinyl Alcohol (PVA) is a water soluble and biodegradable synthetic polymer. It is a dry solid, and is available in granule and powdered forms. Grades include both fully hydrolyzed and partially hydrolyzed. PVA is an excellent adhesive with superior bonding strength, film forming and emulsifying properties.The film of PVA exhibits outstanding resistance to oil, grease and solvents. In addition to its film forming property, it has excellent adhesion to both hydrophilic and hydrophobic materials. PVA has been extensively used in textile industry for warp sizing and resin finishing; in paper industry for surface sizing and pigment coating; in the production of PVAc emulsion as protective colloid; in the suspension polymerization of PVC as a dispersion agent; as binder for ceramics, magnet, foundry cores and pigments.
TAEM
It works by fighting bacteria in your body. Ceftazidime injection is used to treat many kinds of bacterial infections, including severe or life-threatening forms.
Ceftazidime has confirmed activity against clinically relevant Gram-negative bacteria including Citrobacter spp., Enterobacter spp., Klebsiella spp., Proteus spp., Serratia spp., _Escherichia coli, Haemophilus influenzae, Neisseria meningitidis, Pseudomonas aeruginosa, and some Gram-positive bacteria.
It is thus an object of the present invention to provide reactive derivatives of 2-(2-aminothiazol-4-yl)-2-(2-tertbutoxycarbonyl-1 -methylethoxy)iminoacetic acid of formula , which would be suitable for use in the manufacture of cephalosporin antibiotics ceftazidime