(7S)-7-Amino-6,7-dihydro-1,2,3,10-tetramethoxybenzo[a]heptalen-9(5H)-one, [2,3-dihydroxybutanedioate-, (2R,3R)-] (1:1) 49720-72-1 AIDS-031091 AIDS031091 Colchicine, deacetyl-, L-tartrate Desacetylcolchicine L-tartrate NSC36354 SKF 250