CAS No:35661-60-0
Formula:C21H23NO4
Synonyms:FMOC-LEU-OH;FMOC-L-LEU-OH;FMOC-L-LEU;FMOC-L-LEUCINE;F-L-LEU;Fmoc-L-leucine,98%;L-Leucine-1-13C-N-FMOC;N-(fluorenyl-9-methoxycarbonyl)leucine
China Export:From 2018.11 to 2019.11, total export volume of FMOC-L-Leucine 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.
Chemical Products FMOC-L-Leucine Description
white to light yellow crystal powde
Chemical Products FMOC-L-Leucine Basic Attributes
CAS No：35661-60-0
Molecular Formula ：C21H23NO4
Molecular Mass ：353.41
Exact Mass ：353.162720
PSA ：75.6 A^2
LogP ：4.4
EINECS ：252-662-7
InChIKeys ：CBPJQFCAFFNICX-IBGZPJMESA-N
H-bond Acceptor ：4
H-bond Donor ：2
SP3 ：0.33
RBN ：7
Chemical Products FMOC-L-Leucine Characteristics
Density ：1.2±0.1 g/cm3
Melting Point ：152-156 °C(lit.)
Bolling Point ：559.8°C at 760 mmHg
Flash Point ：292.4±25.4 °C
Refractive Index ：1.583
Storage Condition ：2-8°C
BRN ：2178254
Specific Rotation ：-26 º (c=1,DMF 24 ºC)
Chemical Products FMOC-L-Leucine Safety Information
HS Code ：2924299090
UN No. ：NONH for all modes of transport
WGK_Germany ：3
Risk Code ：36/37/38
Safety Instructions ：22-24/25-36/37/39-27-26
Dangerous Mark ：Xi
P Code ：P261, P264, P270, P271, P280, P301+P312, P302+P352, P304+P312, P304+P340, P312, P322, P330, P363, P501
Hazard Statements ：H302
Chemical Products FMOC-L-Leucine Production Methods
General procedure: To a solution of H-Phe-OH (100 mg, 60.5 mmol) in 50 percent MeCN (6.1 mL)were added Fmoc-OPhth (233 mg, 60.5 mmol) and K2CO3 (167 mg, 121 mmol) and stirred at room temperature. After 2 h of stirring saturated sodium bicarbonate solution and H2O were added and the resulting solution was washed with diethyl ether. The aqueous phase is acidified to pH 1 with 1M HCl and extracted with diethyl ether. The organic phase was washed with 1 M HCl, H2O, brine, dried over MgSO4. The filtrate was evaporatedevaporated under reduced pressure to give yellow solid as crude product.EXAMPLE 22
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