| 
    MG 101 | 
    Thymidine, [2-13C-1,3-15N, 
    99 atom % 13C, 99 atom % 15N]- | 
  
  
    | 
    MG 102 | 
    Thymine, [2-13C-1,3-15N, 
    99 atom % 13C, 99 atom % 15N]- | 
  
  
    | 
    MG 103 | 
    3'-Azido-3'-deoxythymidine, 
    [2-13C-1,3-15N, 99 atom % 13C, 99 atom %
    15N]- | 
  
  
    | MG 104 | 
    Esculetin, [benzene ring-13C6(U), 99 atom % 13C]- | 
  
  
    | 
    MG 105 | 
    3'-Azido-3'-deoxythymidine-5'-triphosphate, 
    [thymine-2-13C-1,3-15N2, 99 atom % 13C, 99 atom %
    15N]- | 
  
  
    | 
    MG 106 | 
    Adenine, [13C(U)]- | 
  
  
    | 
    MG 107 | 
    Hypoxanthine, [13C(U)]- | 
  
  
    | 
    MG 108 | 
    Adefovir, [adenine-13C(U), 99 atom % 13C]-;  9-(2-Phosphonylmethoxyethyl)-adenine, [adenine-13C(U), 99 atom % 13C]- | 
  
  
    | 
    MG 109 | 
    Tenofovir, [adenine-13C(U)]-;      
    (1R)-9-(2-Phosphonylmethoxypropyl)-adenine, [adenine-13C(U)]- | 
  
  
    | 
    MG 109S | 
    Tenofovir, diammonium salt, [adenine-13C5]- | 
  
  
    | 
    MG 110 | 
    5-Trifluoromethyl uracil, [2-13C-1,3-15N, 
    99 atom % 13C, 99 atom % 15N]- | 
  
	
    | 
    MG 111 | 
    5-Trifluoromethyl-2'-deoxyuridine, 
    [2-13C-1,3-15N2, 99 atom % 13C, 99 atom %
    15N]- | 
  
	
    | MG 
    113 | 
    Paclitaxel, 
	[2-benzoyl ring-13C(U), 99 
    atom % 13C]- | 
  
	
    | 
	MG 115 | 
    5-Fluorouracil, 
	[2-13C, 99 atom % 13C]- | 
  
	
    | MG 118 | 
    Clevudine, [2-13C-1,3-15N2, 
    99 atom % 13C, 99 atom % 15N2]- ;  
	 
	(L-FMAU) | 
  
	
    | 
	MG 119 | 
    Gemcitabine, [cytosine-2-13C-1,3-15N2, 99 atom % 13C, 99 atom % 15N2]- | 
  
	
  
    | MG 121 | 
    Cytosine, [2-13C-1,3-15N2, 99 atom % 13C, 99 atom % 15N2]- | 
  
  
    | MG 
	122 | 
    4-Nitroacetanilide, [13C6]- | 
  
	
    | 
	MG 123 | 
    1,2-Phenylenediamine, [13C6]- | 
  
	
    | MG 
	124 | 
    4'-Fluoroacetanilide, [ring-13C6]- | 
  
	
    | MG 
	125 | 
    2-Fluoro-4-iodoaniline, [ring-13C6]- | 
  
	
    | MG 126 | 
    (-)-β-2',3'-Dideoxy-5-fluoro-3'-thiacytidine, [2-13C, 1,3-15N2 99 atom % 13C, 98 atom % 15N2]-     
	(Emtricitabine; FTC) | 
  
	
    | 
	MG 127 | 
    Octamethylcyclotetrasiloxane, 
	[methyl-13C4]-    
	(D4, [methyl-13C4]-) | 
  
	
    | 
	MG 128 | 
    Decamethylcyclopentasiloxane, 
	[methyl-13C5]-    
	(D5, [methyl-13C5]-) | 
  
	
    | MG 
	129 | 
    Uracil, [2-13C, 
	1,3-15N2]- | 
  
	
    | MG 131 | 
    5-Fluorocytosine, [2-13C, 1,3-15N2]- | 
  
	
    | 
	MG 132 | 
    N-Acetylretigabine, 
	[triaminophenyl-13C6]- | 
  
	
    | 
	MG 133 | 
    L-Ascorbic acid, 
	
	[1,6-13C2]- | 
  
	
    | 
	MG 134 | 
    β-D-Ribamidine, [ribose-13C(U)]- | 
  
	
    | 
	MG 135 | 
    
    Tenofovir diphosphate, 
	[adenine-13C5]-    (PMPAPP, 
    [adenine-13C5]-) | 
  
	
    | 
	MG 136 | 
    
    Dodecamethylcyclohexasiloxane, 
	[methyl-13C6]- | 
  
	
    | MG 138 | 
    
    FIAU, [uracil-13C1, 15N2]-
	 
	(1-(2-Deoxy-2-fluoro-β-D-arabinofuranosyl)-5-iodouracil, [uracil-2-13C1,15N2]-;
	Fialuridine, [uracil-2-13C1,15N2]-) | 
  
  
    | MG 141 | 
    Clozapine, 
	[chlorophenyl-13C6]-  | 
  
  
    | MG 142 | 
    Urea, [13C,
	15N2]-  | 
  
	
    | 
	MG 143 | 
    Acetonitrile, 
	[13C2]- | 
  
	
    | MG 144 | 
    Guanine, [2-13C, 
	1,3,5,NH2-15N4]- | 
  
	
    | 
	MG 145 | 
    (S)-1-[3-Hydroxy-2-(phosphonyl-methoxy)propyl]-cytosine, [cytosine-1,3-15N2, 
	2,4,5-13C3]- | 
  
	
    | 
	MG 146 | 
    Tenofovir disoproxil fumarate, 
	[adenine-13C5]- | 
  
	
    | 
	MG 147 | 
    5-Hydroxymethylcytosine, 
	[1-13C, 1,3-15N2]- | 
  
	
    | 
	MG 148 | 
    
	3'-Azido-3'-deoxythymidine 5'-monophosphate, [thymine-2-13C-13'-15N2]- | 
  
	
    | 
	MG 149 | 
    Metribuzin, 
	[triazine-6-13C]- | 
  
	
    | 
	MG 151 | 
    
	3-Trifluoromethylpyrazole, [pyrazole-5-13C]- | 
  
	
    | 
	MG 152 | 
    Decamethyltetrasiloxane, 
	[methyl-13C1]- | 
  
	
    | 
	MG 153 | 
    Octamethyltrisiloxane, 
	[methyl-13C3]- | 
  
	
    | 
	MG 154 | 
    2-Fluorobenzylbromide, 
	[ring-13C6]- | 
  
	
    | 
	MG 155 | 
    
    Hexamethyldisiloxane, [13C6]- | 
  
	
    | 
	MG 156 | 
    
    Centanafadine HCl, [naphthyl-13C6]- | 
  
	
    | 
	MG 157 | 
    
    Centanafadine lactam, [naphthyl-13C6]- | 
  
	
    | 
	MG 158 | 
    
    Syringol, [ring-13C(U)]- | 
  
	
    | 
	MG 159 | 
    
    Isethionic acid amide, [13C2, 15N1]- | 
  
	
    | 
	MG 160 | 
    
    Clofarabine, [13C5]- |