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Xanthiside (866366-86-1)
	          CAS: 866366-86-1 
              Synonyms:Xanthiside 
              Molecular weight:401.43100 
              Formula:C17H23NO8S 
	      
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XL-647 (781613-23-8)
	          CAS: 781613-23-8 
              Synonyms:XL-647; 
              Molecular weight:491.393 
              Formula:C24H25Cl2FN4O2 
	      
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XL765 (1349796-36-6)
	          CAS: 1349796-36-6 
              Synonyms:XL765; XL-765; SAR245409; Voxtalisib 
              Molecular weight:599.66 
              Formula:C31H29N5O6S 
	      
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XL518 (934660-93-2)
	          CAS: 934660-93-2 
              Synonyms:GDC-0973; GDC 0973; XL 518; [3,4-Difluoro-2-[(2-fluoro-4-iodophenyl)amino]phenyl][3-hydroxy-3-(2S)-2-piperidinyl-1-azetidinyl]methanone; Cobimetinib 
              Molecular weight:531.316 
              Formula:C21H21F3IN3O2 
	      
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XL-647 (651031-01-5)
	          CAS: 651031-01-5 
              Synonyms:XL647; 4-Quinazolinamine, N-(3,4-dichloro-2-fluorophenyl)-6-methoxy-7-[[(3aa,5a,6aa)-octahydro- 2-methylcyclopenta[c]pyrrol-5-yl]methoxy]-; xl 647 
              Molecular weight:491.385315 
              Formula:C24H25Cl2FN4O2 
	      
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Xanthylium, 9-[2-(ethoxycarbonyl)phenyl]-3,6-bis(ethylamino)-2,7-dimethyl-, molybdatephosphate (63022-07-1)
	          CAS: 63022-07-1 
              Synonyms:Molybdatephosphate, 9-[2-(ethoxycarbonyl)phenyl]-3,6-bis(ethylamino)-2,7-dimethylxanthylium; 
              Molecular weight:2472.695661 
              Formula:C28H31N2O3.xUnspecified 
	      
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Xenon, isotope of mass 124 (15687-60-2)
	          CAS: 15687-60-2 
              Synonyms:Xe-124;Xenon-124 isotope;XENON (124XE, 99.9%) 
              Molecular weight:131.293 
              Formula:Xe 
	      
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XL888 (1149705-71-4)
	          CAS: 1149705-71-4 
              Synonyms:XL888;5-((R)-sec-butylaMino)-N1-((1R,3r,5S)-8-(5-(cyclopropanecarbonyl)pyridin-2-yl)-8-azabicyclo[3.2.1]octan-3-yl)-2-MethylterephthalaMide 
              Molecular weight:503.64 
              Formula:C29H37N5O3 
	      
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Xanthylium, 9-[2-(ethoxycarbonyl)phenyl]-3,6-bis(ethylamino)-2,7-dimethyl-, molybdatesilicate (63022-06-0)
	          CAS: 63022-06-0 
              Synonyms:Xanthylium, 9-[2-(ethoxycarbonyl)phenyl]-3,6-bis(ethylamino)-2,7-dimethyl-, molybdatesilicate 
              Molecular weight:2010.25066 
              Formula:C112H124MoN8O19Si 
	      
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XANTHENE-9-CARBONITRILE (85554-24-1)
	          CAS: 85554-24-1 
              Synonyms:XANTHENE-9-CARBONITRILE;9-CYANOXANTHENE;9H-Xanthene-9-carbonitrile;9-Xanthenecarbonitrile 
              Molecular weight:207.232 
              Formula:C14H9NO 
	      
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Xenon(1+), iodo- (96163-03-0)
	          CAS: 96163-03-0 
              Synonyms: 
              Molecular weight: 
              Formula:IXe 
	      
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Xanthosine, 6-O-methyl-2-S-phenyl-2-thio-, 2',3',5'-triacetate (92123-06-3)
	          CAS: 92123-06-3 
              Synonyms: 
              Molecular weight:516.532 
              Formula:C23H24N4O8S 
	      
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Xenon, (1,2,3,5,6-pentafluoro-4(1H)-borinylidene)- (918891-05-1)
	          CAS: 918891-05-1 
              Synonyms: 
              Molecular weight: 
              Formula:C5BF5Xe 
	      
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Xenon, (1,3,4,5,6-pentafluoro-2(1H)-borinylidene)- (918891-04-0)
	          CAS: 918891-04-0 
              Synonyms: 
              Molecular weight: 
              Formula:C5BF5Xe 
	      
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Xenon, (tetracarbonyliron)- (878660-77-6)
	          CAS: 878660-77-6 
              Synonyms: 
              Molecular weight: 
              Formula:C4FeO4Xe