Abstract: There is provided a film carrier comprising a resin base film and a rolled copper foil laminated thereon, said rolled copper foil forming leads for mounting semiconductor chips or other electronic components in place, characterized in that said rolled copper foil is made of a copper alloy composition consisting essentially of a total of 0.005 to 1.5% by weight of one or two or more selected from a group consisting of______________________________________ P 0.005-0.05 wt %, B 0.005-0.05 wt %, Al 0.01-0.5 wt %, As 0.01-0.5 wt %, Cd 0.01-0.5 wt %, Co 0.01-0.5 wt %, Fe 0.01-0.5 wt %, In 0.01-0.5 wt %, Mg 0.01-0.5 wt %, Mn 0.01-0.5 wt %, Ni 0.01-0.5 wt %, Si 0.01-0.5 wt %, Sn 0.01-0.5 wt %, Te 0.01-0.5 wt %, Ag 0.01-1 wt %, Cr 0.01-1 wt %, Hf 0.01-1 wt %, Zn 0.01-1 wt % and Zn 0.01-1 wt % ______________________________________and the remainder Cu with inevitable impurities, preferably with oxygen content of not more than 50 ppm.

Abstract: New intermediate, an optically active (1S,5R)-7,7-alkylenedioxy-2-alkoxycarbonylbicyclo[3.3.0]octan-3-one which is useful for the synthesis of an optically active carbacyclin. This intermediate is prepared, as a non-reduced compound, from a racemic compound, (1SR,5RS)-7,7-alkylenedioxy-2-alkoxycarbonyl-cis-bicyclo[3.3.0]octan-3-one , by treatment of the racemic compound with a microorganism. The microorganism has an ability of specifically reducing the keto group of the (1R,5S) epimer of the racemic compound.

Abstract: New intermediate, an optically active (1R,5S,6S,7R)-6-tert-butyldiphenylsilyloxmethyl-7-hydroxy-bicyclo[3.3.0]oc tan-3-one (I) having high optical purity which is useful for the synthesis of an optically active carbacyclin and an optically active pentalenolactone E methyl ester. The compound (I) is also an intermediate compound serving for the purpose of improving the optical purity of (1R,5S,6S,7R)-3,3-ethylenedioxy-6-hydroxymethyl-7-(2'-tetrahydropyranyloxy )bicyclo[3.3.0]octane. The compound (I) is prepared by reacting (1R,5S,6S,7R)-3,3-ethylenedioxy-6-hydroxymethyl-7-(2'-tetrahydropyranyloxy )bicyclo[3.3.0]octane with tert-butylchlorodiphenylsilane in the presence of a base and removing the ethylenedioxy and tetrahydropyranyl groups of the resultant compound under an acid condition.

Abstract: New intermediate, an optically active (1S,5R)-7,7-alkylenedioxy-2-alkoxycarbonylbicyclo[3.3.0]octan-3-one which is useful for the synthesis of an optically active carbacyclin. This intermediate is prepared, as a non-reduced compound, from a racemic compound, (1SR,5RS)-7,7-alkylenedioxy-2-alkoxycarbonyl-cis-bicyclo[3.3.0]octane-3-on e, by treatment of the racemic compound with a microorganism. The microorganism has an ability of specifically reducing the keto group of the (1R,5S) epimer of the racemic compound.

Abstract: A high-strength, high-conductivity copper alloy comprises, all by weight, from 0.8 to 4.0% of Sn, from more than 0.01 to 0.4% of P, from 0.05 to 1.0% of Ni, from 0.05 to 1.0% of one, two or more elements selected from Al, Hf, Be, Mo, Zn, Te, Pb, Co, Zr, and Nb, and the remainder of Cu and inevitable impurities. The impurities include not more than 0.0020% of oxygen.

Abstract: Four different optical isomers of a new compound, 1-[2'-(o-methoxyphenoxy)-1'-methylethylamino]-3-(4"-isocarbostyriloxy)-2-p ropanol are now provided as new substances. These four optical isomers are now named as (2R, 1'S)-1-[2'-(o-methoxyphenoxy)-1'-methylethylamino]-3-(4"-isocarbostyriloxy )-2-propanol, (2S, 1'S)-1-[2'-(o-methoxyphenoxy)-1'-methylethylamino]-3-(4"-isocarbostyriloxy )-2-propanol, (2S, 1'R)-1-[2'-(o-methoxyphenoxy)-1'-methylethylamino]-3-(4"-isocarbostyriloxy )-2-propanol, and (2R, 1'R)-1-[2'-(o-methoxyphenoxy)-1'-methylethylamino]-3-(4"-isocarbostyriloxy )-2-propanol, respectively. These four optical isomers have different activities for their .beta.-adrenergic-blocking effect and .alpha.-adrenergic-blocking effect and are useful as valuable agents for therapeutic treatment of various cardiovascular diseases, as compared to an optically inactive racemic mixture of said isomer compounds.

Abstract: An Al-killed cold-rolled steel sheet with excellent demagnetization characteristics is provided which is substantially consisted of 0.005% or less C; from 0.05 to 0.50% Mn; 0.010% or less S; from 0.01 to 0.08% Sol.Al; 0.0050% or less N; wherein Mn %/S %.gtoreq.7 and (Sol.Al % - 0.003%)/N %.gtoreq.6; and the remainder iron and inevitable impurities. A shadow mask made of such Al-killed cold-rolled steel sheet and a color television receiver using the same exhibit a very excellent function. A preferred process for producing such an Al-killed cold-rolled steel is also provided, said process being characterized in first obtaining a steel or a specific composition by the use of a vacuum degassing apparatus and then subjecting the steel to sequential steps of hot rolling, cold rolling, decarburization-annealing, and cold rolling.

Abstract: Compounds of the structure ##STR1## wherein X, R.sub.1, R.sub.2, R.sub.3, R.sub.4, and R.sub.5 are as herein defined, effective as .beta.-blockers and hypotensive agents, are described.

Abstract: Isocarbostyrils of the formula ##STR1## wherein R is a branched alkyl of 3 to 4 carbon atoms, and the acid addition salts thereof, having .beta.-adrenergic blocking activity, are described.

Abstract: Corrosion-resistant copper alloys for the manufacture of radiators are composed of, by weight, 25-40% zinc, 0.005-0.070% phosphorus, 0.05-1.0% each tin and aluminum, and the balance copper and inevitable impurities.

Abstract: A copper alloy for use as a lead material for semiconductor devices, which comprises 0.04-1.0% Ni, 0.01-0.3% Si, and 0.05-15% Zn, all by weight, and the remainder Cu and inevitable impurities. The alloy may contain, in addition to these, a total amount of 0.001-1.0% by weight of one or two or more elements as an accessory ingredient or ingredients selected from the group consisting of 0.001-0.1% by weight each of P and As and 0.01-0.5% by weight each of Ti, Cr, Sn, Mn, and Mg.

Abstract: A copper alloy with high strength and excellent electrical conductivity, corrosion resistance, and spring qualities, comprises 0.4-8% nickel, 0.1-3% silicon, 10-35% zinc, concomitant impurities, and the remainder copper, all by weight. It further comprises at least one element as an accessory ingredient or ingredients selected from the group consisting of 0.001-0.1 wt % each of phosphorus and arsenic and 0.01-1 wt % each of titanium, chromium, tin, and magnesium. The accessory ingredient or ingredients combinedly account for 0.001-2% of the total weight of the alloy composition.

Abstract: Purification of Fr-1923 antibiotic substance by treatment with a macroporous non-ionic adsorption resin such as styrene-divinyl benzene copolymer or acrylic ester polymer.