1.Fmoc-Thr(tbu)-OH is our major product; 2.CAS# 71989-35-0; 3.Purity >98.5% Product Name: Fmoc-Thr(tbu)-OH CAS #: 71989-35-0 Molecular Formula: C23H27NO5 Molecular Weight: 397.48 Specifications: Items Standard Analysis data Appearance White powder conforms Specific Rotation [20/D] (c=1, in ETOAC) +15.0 o ¡� 2.0 o +14.8¡ã Melting point 128 to 142 130 Loss on Drying Not more than 1.0% 0.30% Purity (HPLC) Not less than 98.0% 99.4%