The developed method is based on ion pair extraction with bis(2-ethylhexyl) phosphate (BEHPA) and derivatization with isobutyl
[sup.1]H NMR (400 MHz, CD[Cl.sub.3], S): 7.35 (1H, d, J = 17 Hz, -CO-CH=), 7.84 (1H, d, J = 17 Hz, =CH-Ar), 7.05-7.95 (8H, Ar-H), 0.91 (6H, d, J = 8 Hz, -[(C[H.sub.3]).sub.2]), 2.10-2.13 (1H, m, -CH-), 2.33 (2H, d, J = 8 Hz, -C[H.sub.2]-); [sup.13]C NMR (100 MHz, CD[Cl.sub.3]): d 190.22 (C-1), 123.68 (C-2), 147.56 (C-3), 133.13 (C-2' and C-6'), 131.58 (C-3' and C-5'), 137.02 (C-1'), 148.31 (C-4'), 142.41 (C-1"), 152.32 (C-4"), 128.23 (C-2" and C-6"), 122.11 (C-3" and C-5"), 22.18 (-C[H.sub.3], C of isobutyl
group at C-47), 28.98 (-CH-, C of isobutyl
group at C-47) and 43.87 (-C[H.sub.2]-, C of isobutyl
group at C-47); MS (m/z, %): 310.3 (M + 1, 99.38); Anal.
Monodisperse polystyrene microspheres have been prepared by emulsion copolymerization using hexyl acrylate (HA), ethylhexyl acrylate (EHA), isooctyl acrylate (IOA), butyl acrylate (BA), or isobutyl
acrylate (IBA) as comonomers.
Delayed harvest date increased ethyl butyrate, isobutyl
alcohol, linalool, terpinolene and citronellol, and decreases were noted for hexyl acetate, octanoic acid, hexanoic acid, ethyl caprylate and (3-damascenone in both years.
AIBuPOSS (MA0701), which has one acryl group and seven isobutyl
groups on each Si of the POSS cage, and OIBuPOSS (MS0825) which has isobutyl
groups on every Si corner of the POSS cage, were purchased from Hybrid Plastics Co.
Solitary pulmonary nodule evaluation with 99mTcmethoxy isobutyl
isonitrile in a tuberculosis-endemic area.
The synthesized epoxy resin was examined in coating compositions incorporating different acrylic resins [poly(isobutyl
methacrylate), poly(methyl methacrylate-co-ethyl acrylate), poly(methyl methacrylateco-butyl methacrylate), or poly(methyl methacrylate)].
Model apple juice samples were prepared by the researchers who used three concentrations of sucrose and fructose, and two concentrations of glucose, with a fixed concentration of six characteristic apple aroma-flavor compounds, including isobutyl
acetate, hexanal, butyl acetate, trans-2-hexenal, propyl butyrate and hexyl acetate.
In soap and liquid soap: Triclocarban and Triclosan In toothpaste: Triclosan In moisturizers: Retinyl palmitate or retinolin In shampoo and conditioner: Fragrance, PEG, ceteareth and polyethylene, DMDM hydantoin and various types of parabens: propyl, isopropyl, butyl, isobutyl
In lip products: Retinyl palmitate or retinol In nail products: Formaldehyde or formalin, Toluene, Dibutyl phthalate (DBP) EWG suggests avoiding certain "problem products" completely.
Identification and quantification was based on external calibration with standard solutions of acetaldehyde, 2-pentanone, 2-butanone, ethylacetate (Fluka, Buchs SG, Switzerland); ethanol (Arcus, Oslo, Norway); 2-methyl-1-propanol, 2-methyl-1-butanol, 2-methyl-1-butanal, 3-methyl-1-butanol, 2-methyl-1-butanol, 2-methyl-1-propanol, 3-methyl-1-butanal, 3-methyl-1-butanol, 2-methyl-1-butanol, 2-methyl-1-propanal, diacetyl, 2-propanol, 1- butanol, 2-butanol, acetoin, iso-butylacetate, acetone, 2,3-pentanedione, ethylacetate, acetone, isobutyl
acetate and ethyl butyrate (Merck KGaA, Darmstadt, Germany).
The Saudi team used the technology to obtain Methyl Isobutyl
Ketone (MIBK), whose applications are used in industrial, medical and petroleum fields.
Chemical studies carried out on Brazilian Piperaceae species have revealed the occurrence of pyrones, lignoids and chromenes besides various amides bearing isobutyl
, pyrrolidine, dihydropyridone and piperidine moieties (Parmar et al.