Abstract: The present invention discloses optical recording elements having optical recording layers containing tetra dyes. The dyes have metallized azo dianionic dye with cationic dye counterions. The recording layer has a thickness from 225 to 300 nm.

Abstract: This invention relates to antagonists of calcitonin gene related peptide and in particular the invention relates to amino terminal modifications to peptides to improve their ability to bind to a member of the CGRP-receptor superfamily.

Abstract: An optical recording element is disclosed. The element has a transparent substrate and on the surface of said substrate, a recording layer and a light reflecting layer wherein recording layer comprises a mixture of a metallized formazan dye and cyanine dye and the unrecorded layer is such that the real part of the refractive (n) at 780 nm is greater than 1.8 and the imaginary part (k) is less than 0.15. The metallized formazan dye has a k value of 0.03 to 0.07.

Abstract: A dye mixture having, at 780 nm, a real refractive index not less than 1.8, and an imaginary part not greater than 0.15 and comprising (a) a tetra dye having a metallized azo dianionic dye with a cationic dye counterion and (b) at least one other dye having the structure according to formula I: ##STR1## wherein: A may be equal to or different from A.sup.1, in which each represents an aryl group having 6 to 10 carbon atoms;B may be equal to or different from B.sup.1, in which each ##STR2## R and R.sup.1 represent an alkyl group of C.sub.1 -C.sub.10 or an aryl group having 6 to 10 carbon atoms; andX represents halide, ClO.sub.4, BF.sub.4, PF.sub.6, tosylate and RCOO.

Abstract: An optical recording element is disclosed. The element has a transparent substrate and on the surface of said substrate, a recording layer and a light reflecting layer wherein recording layer comprises a mixture of a metallized formazan dye with symmetrical and unsymmetrical cyanine dyes. The unrecorded layer is such that the real part of the refractive index (n) at 780 nm is greater than 1.8 and the imaginary part (k) is less than 0.15. The metallized formazan dye has a k value of 0.00 to 0.02.

Abstract: A mixture of low k metallized formazan dye with symmetrical and unsymmetrical cyanine dyes is disclosed. The mixture is useful in optical recording layers of optical recording elements.

Abstract: A mixture of symmetrical and unsymmetrical nickel formazan dyes is disclosed. Optical recording elements containing the mixture are also disclosed.

Abstract: A dye of the formula (I) below, and photographic elements having a light sensitive layer and which element contains such a dye: ##STR1## X.sub.1 and X.sub.2 each independently represent the atoms necessary to complete a 5- or 6-membered heterocyclic nucleus;x and y are, independently, integers from 0 to 3 provided x+y is no greater than 4;p and q each independently represents 0 or 1,each L independently represents a methine group;R.sub.1 and R.sub.2 each independently represents an alkyl group or an aryl group, andR.sub.3 represents an alkyl group, aryl group or heteroaryl group;W1 is a counterion as needed to balance the charge of the molecule.

Abstract: A process of forming a single color, ablation image comprising imagewise-exposing by means of a laser, in the absence of a separate receiving element, a dye-ablative recording element comprising a support having thereon a dye layer comprising a cyan image dye dispersed in a polymeric binder, the dye layer having a nitrosophenol or nitrosonaphthol ferrous complex associated therewith, the dye layer also having an infrared-absorbing material associated therewith to absorb at a given wavelength of the laser used to expose the element, the cyan image dye not having substantial absorption at the wavelength of the laser used to expose the element, the laser exposure taking place through the dye side of said element, the laser exposure taking place through the dye side of the element, thereby imagewise-heating the dye layer and causing it to ablate, and removing the ablated material to obtain an image in said ablative recording element.

Abstract: Novel sensitizing dyes containing isoindole nuclei. These dyes can be used as spectral sensitizers for silver halide emulsions.