HyPURITY

Figure 17c shows the section of Figure 17b that covers most Cg and Cig packings, with Zorbax Rx Cg, 24, Zorbax SB Cg, 29 and pBondapak Cjg, 30, in the upper left-hand corner. Figure 13d is a further expansion with Luna Phenylhexyl, 66, Supelcosil EC DB Cjg, 68 and Aqua Cjg, 69, in the upper left-hand corner, Hypersil Hypurity Elite, 63, on the left, and Shodex ODPerfect, 113, on the lower right. 

On the other hand, if we are working on a separation that is nearly complete, bnt reqnires a bit of fine-tnning that cannot be accomplished with mobile phase manipnlations, we wonld select a packing that is somewhat dissimilar bnt not too different. For example, if onr primary separation was done on a Pnrospher RP18e colnmn, 111, we conld select a Hypersil Hypurity Elite, 63, a Polaris Cjg-A, 65 or a SymmetryShield RPjg column, 70, as alternatives. These alternatives wonld change the selectivity of the separation somewhat, but not too drastically. 

Pearce and Lushnikova [78] used semipreparative HPLC method for the isolation of the three omeprazole metabolites produced by the fungi. Incubation of Cunninghamella elegans ATCC 9245 and omeprazole allowed putative fungal metabolite to be isolated in sufficient quantities for structural elucidation. The metabolites structures were identified by a combination of LC/MS and NMR spectrometric experiments. These isolates are used as reference standards in the confirmatory analysis of mammalian metabolites of omeprazole. In the LC/MS and LC/MS/MS analysis, components were separated by reversed-phase HPLC on a Hypersyl HyPurity (15 cm x 4.6 mm, 5 /im) column. The mobile phase consisted... 

Atr C18 Hypurity Aquastar Javelin Express Analysis of plasma, serum or whole blood 0.13 M NH4OAc +30 mM TFA/H20/ACN 5-100 +ESI/QqQ/MRM [53]... 

Fig. 3.1. Separation of the unbonded silica test mixture using in-house packed (A) Hypersil silica, (B) Hypersil BDS silica, (C) Hypersil HyPURITY and (D) Kromasil silica capillaries (100 pm i.d., 33.5 cm total length and 25 cm effective). Conditions 8 2 v/v ACN-50 mM MES, pH 6.1, 20 kV, 20°C, 5 kV for 3 sec. injections, 254 nm. Peak identities 1 = biphenyl, 2 = benzamide, 3 = benzyl alcohol and 4 = thiourea. Adaptation of [20]. Reproduced with die permission of Chromatographia.

The traditional Hypersil unbonded silica at pH 7.8 gave baseline separation within 14 minutes of the basic analyte mixture (Fig. 3.2). The poorer chromatographic performance of the procainamide analyte was attributed to its suspected metal chelating properties. The purer HyPURITY unbonded silica gave broader peak shapes with reduced analysis times than the traditional acidic silica, but complete separation of the analytes was not observed. The separation of the bases on Hypersil BDS was observed... 

HyPure. [Olin] Chloric and hypochlor-ous acid, lithium, potassium, or sodium hypochlorites for bleaching, organic synthesis, water treatment, hard surface cleaners. 

HyPure A, Used for blexhing, in organic synthesis, disinfectant In aqueous solution, decomposes slowly to chlorine, oxygen and perchloric acid. Olin Corp. 

Caswell No. 528A CCRIS 4023 EINECS 237-558-1 EPA Pesticide Chemical Code 014702 Hypochlorous acid, lithium salt HyPure L Lithium chloride oxide Lithium hypochlorite Lithium oxychloride UN1471, Laundry bleach, swimming pool chlorination. PMC Corp. Olin Corp. 

Bases Metal ion-free, modem stationary phases suitable for separating bases these include Symmetry, Kromasil, Inertsil, Nucleosil AB, Purospher, Zorbax SB, SymmetryShield, HyPurity Elite, Prodigy, XTerra, Bonus (think of Cg tool). First choice acidic pH (e.g. pH 2.5-3.5) with acetonitrile if retention too little, move to pH 7.5 with methanol as the organic modifier. You may also add triethylamine or octyl-amine (ca. 50-500 ppm) or for strong bases add an ion pair reagent (PIC B), e.g. 50-100 mM octasulfonic acid. 

Trade Name Synonyms HyPure C t[Olin/Chlor Al kal i http //www. olinchloralkali. com]... 

Storage Protect from light highly unstable may be store for a few days if kept -20 C Uses Textile and fiber bleaching, water purification, antiseptic, disinfectant, sanitizer chlorinating agent Manuf./Distrib. Arch Chems. http //www.archchemicals.com Trade Name Synonyms HyPure A [Olin/Chlor Alkali http //www.oiinchioraikaii.com], J-3 Sol n. t[Arch Chems./HTH Water Prods.]... 

Hypromellose phthalate. See Hydroxypropyl methyicelluiose phthalate HyPure A. See Hypochlorous acid HyPure C. See Chloric acid HyPure CCF-HB. See Sodium hypochlorite HyPure K. See Potassium hypochlorite HyPure L. See Lithium hypochlorite HyPure N. See Sodium hypochlorite... 

Trade Name Synonyms BioGuard Lithium Hypochlorite Cone. t[Bio-Lab http //www.wateradditives.com]] HyPure L t[Olin/Chlor Alkali http //WWW. oiinchioraikaii. com]... 

Cadmium fluoride 7790-80-9 Cadmium iodide 7790-92-3 Hypochlorous acid HyPure A J-3 Sol n. 

BioGuard Lithium Hypochlorite Cone. HyPure L Lithium hypochlorite 13845-36-8... 

Bacticide Citruscide HyPure CCF-HB HyPure N Lass-0 Bleach... 

HyPURITY advance Nucleosil nautilus Symmetry shield C18... 

Fig. 15.4 Bluefin tuna larvae and typical features of morphological development (a) newly hatched yolk-sac larvae (b) larvae 2 days old with pectoral fins formed, yolk and oil globule nearly resorbed, and mouth and anus open (c) larvae 3 days old, eyes well pigmented, small amounts of yolk and oil globule stiU present, and bent and swollen gut with food (d) larvae 5 days old with first inflated swimbladder (e) larvae 9 days old with rudiments of the hypural plate and anal fin base, four teeth on the upper jaw, and three teeth on the lower jaw (f) larvae 12 days old with fully flexed notochord and forked caudal fin (g) larvae 16 days old with complete rays and spines in all fins except pectorals (h) larvae 19 days old with almost fusiform body (i) juvenile 33 days old with scale formation in progress (Kawamura...

HyPure CCF Sodium Hypochlorite, Olin Corp., Stamford, CT, 1996. 

HyPure K. Potassium Hypochlorite, Olin Chemicals, Stamford, CT, 1991. 

---