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white to light yellow crystal powde
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CAS No:71989-33-8 Formula:C22H25NO5 China Export:From 2018.11 to 2019.11, total export volume of Fmoc-O-tert-Butyl-L-serine from China was 76,865,630KG while total export value was $825,816,556. The biggest proportion of exporting volume in the last 12 months was 14.24% in 2019.05. Echemi Chemical Fmoc-O-tert-Butyl-L-serine Description white to light yellow crystal powde Echemi Chemical Fmoc-O-tert-Butyl-L-serine Basic Attributes CAS No:71989-33-8 Molecular Formula :C22H25NO5 Molecular Mass :383.44 Exact Mass :383.173279 PSA :84.9 A^2 LogP :3.5 EINECS :276-260-6 InChIKeys :REITVGIIZHFVGU-IBGZPJMESA-N H-bond Acceptor :5 H-bond Donor :2 SP3 :0.36 RBN :8 Echemi Chemical Fmoc-O-tert-Butyl-L-serine Characteristics Density :1.2±0.1 g/cm3 Melting Point :130.5-135.5 °C(lit.) Flash Point :303.7±30.1 °C Refractive Index :1.575 Storage Condition :2-8°C
Specific Rotation :25 º (c=1,EtOAc 24 ºC) Echemi Chemical Fmoc-O-tert-Butyl-L-serine Safety Information HS Code :2924299090 UN No. :NONH for all modes of transport WGK_Germany :3 Risk Code :36/37/38 Safety Instructions :24/25-36/37/39-27-26 Dangerous Mark :Xi P Code : P261, P264, P270, P271, P272, P273, P280, P301+P312, P302+P352, P304+P312, P304+P340, P312, P321, P322, P330, P333+P313, P363, P501 Hazard Statements :H302 Echemi Chemical Fmoc-O-tert-Butyl-L-serine Product Usage Used for peptide synthesis and as amino acid protection monomer. Echemi Chemical Fmoc-O-tert-Butyl-L-serine Production Methods Suspend O-tert-butyl-L-serine in dioxane solution and acylate with fluorenylmethyloxycarbonyl azide to obtain a crude product, which is extracted with ethyl acetate at a pH of 9-10. Refined by
recrystallization. Echemi Chemical Fmoc-O-tert-Butyl-L-serine Material and Products Material : N-(9-Fluorenylmethoxycarbonyloxy)succinimide, Fmoc-L-Serine, H-SER(TBU)-OH, 1,4-Dioxane, Fluorene