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(2S)-4-amino-2-(9H-fluoren-9-ylmethoxycarbonylamino)-4-oxobutanoic acid

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Origin: China

Cas No: 71989-16-7

Specification: 99%min

Min order Quantity: 1 /kg

Supply Ability: 50 mt/month

Lead time: 7 days for OEM, 3 days for ready goods

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Products Specification
Product Description

Quick Details
CAS No.:
71989-16-7
Other Names:
Fmoc-L-Asn-OH
MF:
C19H18N2O5
EINECS No.:
N/A
Place of Origin:
Shanghai, China
Type:
Flavor & Fragrance Intermediates, Pharmaceutical Intermediates, Syntheses Material Intermediates
Purity:
99.9%
Brand Name:
richest, Richest
Model Number:
Richest
Application:
Chemical Intermediate
Appearance:
N/A
Shelf Life:
2 Years
Certification:
Any you need
Package:
1kg/bag, 25kg/bag
Packaging&Delivery
Packaging Details
1kg/bag,25kg/bag,25kg/drum or customer's request
Port
shanghai
Lead Time:
Quantity(Kilograms) 1 - 1 2 - 10 11 - 100 >100
Est. Time(days) 1 3 3 To be negotiated

Property

CAS No.: 71989-16-7 Formula: C19H18N2O5 Molecular Weight: 354.35700

Description

Nα-Fmoc-L-asparagine is an N-Fmoc-protected form of L-Asparagine. L-Asparagine was first isolated by Robiquet and Vauquelin from asparagus juice (a high source of L-asparagine). L-Asparagine is often incorporated into proteins, and is a basis for some cancer therapies as certain cancerous cells require L-asparagine for growth.

Basic Info

Chemical Name	(2S)-4-amino-2-(9H-fluoren-9-ylmethoxycarbonylamino)-4-oxobutanoic acid
Synonyms	Fmoc-Asn-OH; Fmoc-asparagine; Fmoc-L-asparagine; Nalpha-Fmoc-L-asparagine; Fmoc-L-Asn-OH; N-Fmoc-L-Asparagine;
CAS No.	71989-16-7
Molecular Formula	C19H18N2O5
Molecular Weight	354.35700
PSA	118.72000
LogP	2.94490

Properties

Appearance & Physical State	White to off-white crystalline powder
Density	1.362 g/cm3
Boiling Point	678.6ºC at 760 mmHg
Melting Point	180ºC
Flash Point	364.2ºC
Refractive Index	-13 ° (C=1, DMF)
Stability	Stable under normal temperatures and pressures.
Storage Condition	2-8ºC

Safety Info

Safety Statements	S24/25
HS Code	2924299090
WGK Germany	3
Risk Statements	R36/37/38
Hazard Codes	Xi

Synthesis Route

L-asparagine+N-(9-Fluorenylmethoxycarbonyloxy)succinimide→(2S)-4-amino-2-(9H-fluoren-9-ylmethoxycarbonylamino)-4-oxobutanoic acid
L-asparagine+9-Fluorenylmethyl pentafluorophenyl carbonate→(2S)-4-amino-2-(9H-fluoren-9-ylmethoxycarbonylamino)-4-oxobutanoic acid
L-asparagine+9H-fluoren-9-ylmethyl N-diazocarbamate→(2S)-4-amino-2-(9H-fluoren-9-ylmethoxycarbonylamino)-4-oxobutanoic acid

Precursor

9H-fluoren-9-ylmethyl N-diazocarbamate
Fmoc-N-Trityl-L-Asparagine
9-Fluorenylmethyl pentafluorophenyl carbonate
N-(9-Fluorenylmethoxycarbonyloxy)succinimide

Downstream Product

(2,3,4,5,6-pentafluorophenyl) (2S)-4-amino-2-(9H-fluoren-9-ylmethoxycarbonylamino)-4-oxobutanoate
Fmoc-L-α,β-diaminopropionic acid
Fmoc-N-Trityl-L-Asparagine
L-asparagine

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