CAS 40837-51-2 appears in our catalog under these names: (2R,3S,4S,5S)-2-(2,3-Dihydro-1h-indol-1-yl)-6-(hydroxymethyl)tetrahydro-2h-pyran-3,4,5-triol, 95%, (2R,3S,4S,5S,6R)-2-(Hydroxymethyl)-6-(indolin-1-yl)tetrahydro-2H-pyran-3,4,5-triol, 95%. Offered by: Combi-blocks, AmBeed. Available pack sizes: 1g, 5g.