Abstract: Provided is a novel substance that can emit phosphorescence. Alternatively, provided is a novel substance with high emission efficiency. An organometallic complex in which a 4-arylpyrimidine derivative is a ligand and iridium is a central metal is provided. Specifically, an organometallic complex having a structure represented by a general formula (G1) is provided. In the general formula (G1), R1 represents a substituted or unsubstituted alkyl group having 1 to 4 carbon atoms or a substituted or unsubstituted aryl group having 6 to 10 carbon atoms, R2 represents any of hydrogen, a substituted or unsubstituted alkyl group having 1 to 4 carbon atoms, and a substituted or unsubstituted phenyl group, R3 represents hydrogen or a substituted or unsubstituted alkyl group having 1 to 4 carbon atoms, and Ar1 represents a substituted or unsubstituted arylene group having 6 to 10 carbon atoms.

Abstract: An organometallic iridium complex that has high emission efficiency and a long lifetime and emits deep red light (emission wavelength: around 700 nm) is provided. The organometallic iridium complex has a ligand that is represented by General Formula (G0) and has at least a dimethyl phenyl group and a quinoxaline skeleton. In the formula, R1 to R3 separately represent an alkyl group having 1 to 6 carbon atoms, a phenyl group, or a phenyl group having an alkyl group having 1 to 6 carbon atoms as a substituent.

Abstract: A light-emitting element including a phosphorescent organometallic complex is provided. The organometallic complex emits phosphorescence in the yellow green to orange wavelength range and has high emission efficiency and high reliability. Thus, the organometallic complex that exhibits phosphorescence is provided. The organometallic complex, in which nitrogen at the 3-position of a pyrimidine ring is coordinated to a metal, a carbazole skeleton is bonded to the 4-position of the pyrimidine ring, and the carbazole skeleton is bonded to the metal, is used as an emission center. The metal is preferably a Group 9 element or a Group 10 element, more preferably iridium.

Abstract: As a novel substance having a novel skeleton, provided is a novel phosphorescent organometallic iridium complex that can emit phosphorescence in a blue green to red wavelength region and has high emission efficiency. The phosphorescent organometallic iridium complex has a ligand having a pyridyl pyrimidine skeleton, i.e., the phosphorescent organometallic iridium complex has a ligand having a structure represented by the following general formula (G0). Note that in the formula, R1 and R4 to R6 separately represent hydrogen or an alkyl group having 1 to 6 carbon atoms; and R2 and R3 separately represent any of hydrogen, an alkyl group having 1 to 6 carbon atoms, a phenyl group that may have a substituent, and a pyridyl group that may have a substituent.

Abstract: As a novel substance having a novel skeleton, an organometallic complex having high emission efficiency and improved color purity is provided. The color purity is improved by reducing the half width of an emission spectrum. The organometallic complex is represented by General Formula (G1). In General Formula (G1), at least one of R1 to R4 represents a substituted or unsubstituted alkyl group having 1 to 4 carbon atoms, and the others each independently represent hydrogen or a substituted or unsubstituted alkyl group having 1 to 4 carbon atoms. Note that the case where all of R1 to R4 represent alkyl groups each having 1 carbon atom is excluded. Further, R5 to R9 each independently represent hydrogen or a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms.

Abstract: The present inventors revealed a TTF-1-specific oncogenic process by elucidating the molecular mechanism regulated by the master regulatory factor TTF-1. The present inventors focused on the elucidation of the essence of the lineage-specific survival signal which is a novel canceration signal. Thus, the present inventors found that the expression of ROR1, which is a receptor tyrosine kinase, is induced by the master regulatory factor TTF-1, and demonstrated the presence of a characteristic canceration signal transduction system.

Abstract: In order to provide a screening method for a compound capable of suppressing a mechanism of ROR1 by targeting ROR1 and to provide a drug comprising as an active ingredient a compound capable of suppressing the mechanism, it has been found out that suppressing a function of ROR1 makes it possible to suppress receptor tyrosine kinase-mediated pro-survival signaling in a cancer cell. Further, it has been found out that suppressing a function of ROR1 also effectively suppresses growth of cancer cell lines having acquired resistance to inhibitors of receptor tyrosine kinases such as EGFR and MET.

Abstract: A novel method in which a pyrazine derivative is synthesized without a synthetic pathway of a pyrazine halide derivative, which is a synthetic intermediate, whose pytazine skeleton is halogenated is provided. Furthermore, a light-emitting element, a light-emitting device, an electronic device, or a lighting device with high emission efficiency by using a pyrazine derivative obtained by the above synthesizing method as an EL material is provided. In the method, a pyrazine derivative is synthesized without a synthetic pathway of a pyrazine halide derivative, which is a synthetic intermediate, whose pytazine skeleton is halogenated. Specifically, a 2-arylpyrazine derivative having an aryl group or a heteroaryl group as a substituent is synthesized.

Abstract: Provided are a light-emitting element including a novel organometallic complex as an emission center, the organometallic complex, a light-emitting device, an electronic device, and a lighting device each using the light-emitting element. One embodiment of the present invention is a light-emitting element including, as an emission center, an organometallic complex in which a benzofuropyrimidine derivative is coordinated to a metal. In particular, another embodiment is a light-emitting element including, as an emission center, an organometallic complex in which a benzofuropyrimidine derivative having an aryl group at the 4-position is coordinated to a metal. Another embodiment is a light-emitting element including, as an emission center, an organometallic complex in which nitrogen at the 3-position of a benzofuropyrimidine derivative having an aryl group at the 4-position is coordinated to a metal and the aryl group is bonded to the metal.

Abstract: As a novel substance having a novel skeleton, provided is a novel phosphorescent organometallic iridium complex that can emit phosphorescence in a blue green to red wavelength region and has high emission efficiency. The phosphorescent organometallic iridium complex has a ligand having a pyridyl pyrimidine skeleton, i.e., the phosphorescent organometallic iridium complex has a ligand having a structure represented by the following general formula (G0). Note that in the formula, R1 and R4 to R6 separately represent hydrogen or an alkyl group having 1 to 6 carbon atoms; and R2 and R3 separately represent any of hydrogen, an alkyl group having 1 to 6 carbon atoms, a phenyl group that may have a substituent, and a pyridyl group that may have a substituent.

Abstract: A new light-emitting device utilizing phosphorescence is provided. Further, an electronic device and a lighting device which utilize phosphorescence are provided. One embodiment of the present invention is a light-emitting device including a phosphorescent organometallic iridium complex comprising iridium and either pyrimidine having an aryl group at the 4-position or 1,3,5-triazine having an aryl group at the 2-position. One of nitrogen in the pyrimidine or 1,3,5-triazine is coordinated to the iridium. Also, each of the pyrimidine and 1,3,5-triazine has a substituent such as an alkyl group or an aryl group. Further the ortho position of the aryl group which is bonded to the 4-position of the pyrimidine or the 2-position of the 1,3,5-triazine is bonded to the iridium.

Abstract: A sliding door slides along the side of a vehicle. An electric drive unit is disposed on a floor of the vehicle and a lower guide rail is disposed under the floor. A lower roller bracket coupled to the sliding door moves along the lower guide rail back and forth. A door-opening outer tube mounted to the sliding door extends from the electric drive unit to a rear wire guide at the rear end of the lower guide rail. A door-closing outer tube extends from the electric drive unit to a front wire guide at the front end of the lower guide rail. A door-opening wire extends through the door-opening outer tube from the electric drive unit to the lower roller bracket. A door-closing wire extends through the door-closing outer tube from the electric drive unit to the lower roller bracket.

Abstract: Provided is a novel substance that can emit phosphorescence. Alternatively, provided is a novel substance with high emission efficiency. An organometallic complex in which a 4-arylpyrimidine derivative is a ligand and iridium is a central metal is provided. Specifically, an organometallic complex having a structure represented by a general formula (G1) is provided. In the general formula (G1), R1 represents a substituted or unsubstituted alkyl group having 1 to 4 carbon atoms or a substituted or unsubstituted aryl group having 6 to 10 carbon atoms, R2 represents any of hydrogen, a substituted or unsubstituted alkyl group having 1 to 4 carbon atoms, and a substituted or unsubstituted phenyl group, R3 represents hydrogen or a substituted or unsubstituted alkyl group having 1 to 4 carbon atoms, and Ar1 represents a substituted or unsubstituted arylene group having 6 to 10 carbon atoms.

Abstract: The present inventors revealed a TTF-1-specific oncogenic process by elucidating the molecular mechanism regulated by the master regulatory factor TTF-1. The present inventors focused on the elucidation of the essence of the lineage-specific survival signal which is a novel canceration signal. Thus, the present inventors found that the expression of ROR1, which is a receptor tyrosine kinase, is induced by the master regulatory factor TTF-1, and demonstrated the presence of a characteristic canceration signal transduction system.

Abstract: A lower guide rail is mounted to a lower surface of a vehicle floor panel. Front and rear cable guides are provided on front and rear ends of the lower guide rail. A lower roller bracket fixed to a slide door is guided by the lower guide rail. An electric actuator unit is mounted to the lower surface of the floor panel. The electric actuator unit includes a cable wind/rewind drum. A watertight cover is mounted to the lower surface of the floor panel in a manner to cover the electric actuator unit. A first inner cable is guided by the front cable guide and has one end portion wound on the wind/rewind drum and the other end fixed to the lower roller bracket. A second inner cable is guided by the rear cable guide and has one end portion wound on the wind/rewind drum and the other end fixed to the lower roller bracket.

Abstract: A sliding door slides along the side of a vehicle. An electric drive unit is disposed on a floor of the vehicle and a lower guide rail is disposed under the floor. A lower roller bracket coupled to the sliding door moves along the lower guide rail back and forth. A door-opening outer tube mounted to the sliding door extends from the electric drive unit to a rear wire guide at the rear end of the lower guide rail. A door-closing outer tube extends from the electric drive unit to a front wire guide at the front end of the lower guide rail. A door-opening wire extends through the door-opening outer tube from the electric drive unit to the lower roller bracket. A door-closing wire extends through the door-closing outer tube from the electric drive unit to the lower roller bracket.

Abstract: A lower guide rail is mounted to a lower surface of a vehicle floor panel. Front and rear cable guides are provided on front and rear ends of the lower guide rail. A lower roller bracket fixed to a slide door is guided by the lower guide rail. An electric actuator unit is mounted to the lower surface of the floor panel. The electric actuator unit includes a cable wind/rewind drum. A watertight cover is mounted to the lower surface of the floor panel in a manner to cover the electric actuator unit. A first inner cable is guided by the front cable guide and has one end portion wound on the wind/rewind drum and the other end fixed to the lower roller bracket. A second inner cable is guided by the rear cable guide and has one end portion wound on the wind/rewind drum and the other end fixed to the lower roller bracket.