摘要:
Novel derivatives of 1-phenyl-1H-pyrazolo[3,4-d]pyrimidine substituted at the 4-position of the pyrimidine ring are provided. A typical example is 1-phenyl-1H-pyrazolo[3,4-d]pyrimidine-4-carbonitrile. The compounds exhibit excellent anti-carcinogenic activities as evidenced by the animal test with mice.
摘要:
A novel compound, 1-methacryloxyethane-1,1-diphosphonic acid and its salts provide improved adhesion to tooth substances when used as a polymerizable monomer in a dental adhesive composition.
摘要:
Novel compounds having the general formula: ##STR1## wherein R is selected from hydrogen and methyl, effectively inhibit the growth of cancerous cells. These compounds are useful as carcinostatic agents.
摘要:
An information recording material having thereon an image carrier layer composed of a hydrophilic polymer and a protective covering layer. The protective covering layer contains an aqueous polyurethane resin or an aqueous polyacryl resin. An information recording material which is excellent in terms of water resistance, anti-scratch property, glossiness, image storage stability and resistance to fingerprints is obtained.
摘要:
Proposed is a bleaching composition for house cleaning which exhibits very high bleaching activity but is free from the problem of an unpleasant irritative odor. The composition comprises: (a) a water-soluble peroxide compound such as hydrogen peroxide; and (b) a compound as a bleaching activator represented by the general formula ##STR1## in which X.sup.1 is a monovalent group represented by the general formulaR.sub.3 N.sup.+ --Y--, each R being, independently from the others, an alkyl group having 1 to 4 carbon atoms and Y being an alkylene group, X.sup.2 is a hydrocarbon group, an unsubstituted or N-substituted aminoalkyl group or the same group as X.sup.1, A is an anion of n valency and x is a number of 1/n or 2/n so as to balance the positive and negative charges in the molecule.
摘要:
Novel compounds used as polymerizable monomers in a dental adhesive composition, and having a general formula (1): ##STR1## wherein R.sup.2 is a carboxyl group and R.sup.3 is a hydrogen atom when R.sup.1 is a methyl group, and R.sup.2 is a hydroxyl group and R.sup.3 is a carboxyl group when R.sup.1 is a hydrogen atom, that is, N-methyl-N-(2-hydroxy-3-methacryloyloxypropyl)-m-aminobenzoic acid and 2-hydroxy-4-[(2-hydroxy-3-methacryloyloxypropyl)amino]benzoic acid are disclosed.
摘要:
A vibrating member made of a thin metal plate and adapted to be used in an acoustic transducer such as a loudspeaker or microphone is diffused at least partially with an inorganic substance to improve the acoustic characteristics thereof, particularly the high frequency range.