Abstract: A process for the preparation of a polypeptide made from amino acids L-alanine, L-glutamic acid, L-lysine, and L-tyrosine comprising using N-thiocarboxyanhydride of at least one amino acid as a starting material.

Abstract: The present invention is an improved book cover and removable reading light, the book cover having a central spine section having a longitudinal pocket therein and two outer covers each pivotally connected to opposite edges of the central spine section. An elongated reading light is removably mounted in the pocket of the central spine section, the reading light having a housing including a battery compartment for receiving batteries and a second compartment for receiving an extendable supporting arm for the reading light. The supporting arm and reading light are disposed for movement relative to the second compartment between an open position in which the supporting arm extends out of the second compartment and a closed position in which the supporting arm is disposed within the second compartment. In addition, the reading light is movably mounted relative to the supporting arm for directing light in different directions, as desired by the user.

Abstract: A portable reading light has a telescoping arm that is slidable within a housing, the arm having a light source at the end thereof which has one or more light emitting diodes which provide bright light, low power consumption and durability. The light emitting diodes preferably are located in an articulatable light support and disposed adjacent to a focusing lens to better direct and shape the light onto a surface. The arm is mounted to a base assembly slidable within the housing and being telescopically expandable for stabilizing the arm when set for use.

Abstract: Copolymer-1 is a mixture of synthetic polypeptides composed of alanine, glutamic acid, lysine, and tyrosine. The invention relates to an improved process for the preparation of copolymer-1 characterized by the deblocking of the protected copolymer-1 that is carried out in one reaction. The process of the present invention has the advantage of high yield and ease of production. Copolymer-1 is a useful drug in treating multiple sclerosis.

Abstract: A combined illuminating magnifier and flashlight has a housing with a pivot, a frame for carrying a magnifying lens mounted to the housing and being rotatable about the pivot between a retracted position, where the magnifying lens is located in the housing and an extended position where the magnifying lens is available for use. A light is mounted in the frame for illuminating the magnifying lens. The light, when the frame is retracted, is aligned with a flashlight lens such that the device can function as either an illuminating magnifier or as a flashlight.