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71989-14-5

Basic Information
CAS No.: 71989-14-5
Name: Fmoc-L-Aspartic acid beta-tert-butyl ester
Article Data: 11
Molecular Structure:
Molecular Structure of 71989-14-5 (Fmoc-L-Aspartic acid beta-tert-butyl ester)
Formula: C23H25NO6
Molecular Weight: 411.455
Synonyms: 2-(9H-fluoren-9-ylmethoxycarbonylamino)-4-oxo-4-tert-butoxy-butanoic acid;Fmoc-Asp(OtBu)-OH;(2S)-2-(9H-fluoren-9-ylmethoxycarbonylamino)-4-oxo-4-tert-butoxy-butanoate;4-tert-Butyl hydrogen N-((9H-fluoren-9-ylmethoxy)carbonyl)-L-aspartate;Fmoc-L-Asp(OtBu)-OH;Fmoc-Asp(OBut);Fmoc-Asp(otbu);Fmoc-L-Aspartic acid β-tert.buty ester;Fmoc-L-Aspartic Acid-4-Tert-Butyl Ester;FmocAsp(OtBu)-OH;Fmoc-L-aspartic Acid 4-tert-Butyl Ester;Fmoc-Asp(otbu) )-OH;
EINECS: 276-251-7
Density: 1.251 g/cm3
Melting Point: 148-150 °C (dec.)
Boiling Point: 620.8 °C at 760 mmHg
Flash Point: 329.3 °C
Solubility: Slightly soluble in water.
Appearance: white to light yellow crystal powder
Hazard Symbols: IrritantXi
Risk Codes: 36/37/38
Safety: 24/25-36/37/39-27-26
PSA: 101.93000
LogP: 4.10100
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    71989-14-5

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  • Fmoc-L-Aspartic acid beta-tert-butyl ester

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    71989-14-5

    Fmoc-L-Aspartic acid beta-tert-butyl ester

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    FOB Price:  USD $ 0.0-0.0

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Chemistry

Molecular structure of Fmoc-L-Aspartic acid beta-tert-butyl ester (CAS NO.71989-14-5) is:

Product Name: Fmoc-L-Aspartic acid beta-tert-butyl ester
CAS Registry Number: 71989-14-5
IUPAC Name: 2-(9H-fluoren-9-ylmethoxycarbonylamino)-4-[(2-methylpropan-2-yl)oxy]-4-oxobutanoic acid
Molecular Weight: 411.4477 [g/mol]
Molecular Formula: C23H25NO6
XLogP3-AA: 3.5
H-Bond Donor: 2
H-Bond Acceptor: 6 
EINECS: 276-251-7
Melting Point: 148-150 °C (dec.)
Surface Tension: 51.5 dyne/cm
Density: 1.251 g/cm3
Flash Point: 329.3 °C
Enthalpy of Vaporization: 96.72 kJ/mol
Boiling Point: 620.8 °C at 760 mmHg
Vapour Pressure: 2.83E-16 mmHg at 25°C 
Product Categories: Protected amino acid & peptides;Amino Acids;Aspartic acid [Asp, D];Fmoc-Amino Acids and Derivatives;Amino Acids (N-Protected);Biochemistry;Fmoc-Amino Acids;Fmoc-Amino acid series

Safety Profile

Safty information about Fmoc-L-Aspartic acid beta-tert-butyl ester (CAS NO.71989-14-5) is:
Hazard Codes: IrritantXi
Risk Statements: 36/37/38
 R36/37/38:Irritating to eyes, respiratory system and skin.
Safety Statements: 24/25-36/37/39-27-26 
S24/25:Avoid contact with skin and eyes. 
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection. 
S27:Take off immediately all contaminated clothing. 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
WGK Germany: 3
HazardClass: IRRITANT

Specification

 Fmoc-L-Aspartic acid beta-tert-butyl ester , its cas register number is 71989-14-5. It also can be called 4-tert-Butyl hydrogen N-((9H-fluoren-9-ylmethoxy)carbonyl)-L-aspartate ; N-(9-Fluorenylmethoxycarbonyl)-L-aspartic acid beta-tert-butyl ester ; Fmoc-Asp(OtBu)-OH . It is a white to light yellow crystal powder.

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