Abstract: A new holder (1) for a disk-shaped information carrier, in particular for a compact disk, is described with a base support (2;21) and clamping elements (3; 17) arranged thereon and integrated therewith which extend into the central opening of the information carrier. The clamping elements (3; 17) in this arrangement are arranged surrounding a central support member (11; 18) and the clamping elements (3; 17) and support element (11; 18) are not higher than twice the thickness of the disk-shaped information carrier. Furthermore a plate-shaped support member (15) for a disk-shaped information carrier, in particular for a compact disk (32), is described which presents a recess in which a holder (1) is arranged which penetrates a central opening of the information carrier (32) detachably connecting the latter to the support member (15).

Abstract: Compounds of the formula (I) or salts thereof in which R1, R3=H, (subst.) hydrocarbon radical (HC) or (subst.) heterocyclyl which, including substituents, have 1-30 carbon atoms, R2=R0—Q0—, in which R0=H, (subst.) HC or (subst.) heterocyclyl radical, in each case having 1-30 carbon atoms including substituents, and Q0=a direct bond or —O—, —SO2-, —NH—, —N[(C1-C6)alkyl]-, —CO—, —CO—NH— or —O—CO—NH—; R4=H, halogen, NO2, CN, (C1-C4)alkyl, (C1-C4)alkoxy, [(C1-C4)alkyl]carbonyl or [(C1-C4)alkoxy]carbonyl, where each of the last four radicals may be halogenated; R5=H or (C1-C4)alkyl; Q=O or NR*; R*=H.