All Photos(2)

317500

Sigma-Aldrich

(1S,2R)-(+)-Norephedrine

98%

Synonym(s):
erythro-α-(1-aminoethyl)benzyl alcohol, Phenylpropanolamine, D-(+)-Norephedrine, (1S,2R)-2-Amino-1-phenyl-1-propanol
Linear Formula:
C6H5CH(OH)CH(CH3)NH2
CAS Number:
Molecular Weight:
151.21
Beilstein:
2802896
MDL number:
PubChem Substance ID:
NACRES:
NA.22

Quality Level

assay

98%

optical activity

[α]20/D +40°, c = 7 in 1 M HCl

mp

51-54 °C (lit.)

storage temp.

2-8°C

SMILES string

C[C@@H](N)[C@@H](O)c1ccccc1

InChI

1S/C9H13NO/c1-7(10)9(11)8-5-3-2-4-6-8/h2-7,9,11H,10H2,1H3/t7-,9-/m1/s1

InChI key

DLNKOYKMWOXYQA-VXNVDRBHSA-N

General description

(1S,2R)-(+)-Norephedrine is an enantiomer of ephedrine mainly used as a chiral auxiliary for asymmetric synthesis.

Application

(1S,2R)-(+)-Norephedrine may be used in the preparation of dendritic ligands, which on combining with Ru(II) complexes form efficient asymmetric transfer hydrogenation catalysts. It may also be used in the preparation of N-((1S,2R)-1-hydroxy-1-phenylpropan-2-yl)furan-2-carboxamide. This chiral amide can efficiently catalyze the enantioselective ethylation of aromatic and heteroaromatic aldehydes to secondary alcohols in the absence of titanium tetraisopropoxide as promotor.

Packaging

10, 50 g in glass bottle

Pictograms

Exclamation mark

Signal Word

Warning

Hazard Statements

Precautionary Statements

Hazard Classifications

Acute Tox. 4 Oral - Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

Target Organs

Respiratory system

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 3

Flash Point(F)

235.4 °F - closed cup

Flash Point(C)

113 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificate of Analysis

Certificate of Origin

Dendritic catalysts for asymmetric transfer hydrogenation based (1S, 2R)-norephedrine derived ligands.
Liu PN, et al.
Tetrahedron Asymmetry, 14(16), 2481-2485 (2003)
Chiral amide from (1S, 2R)-(+)-norephedrine alkaloid in the enantioselective addition of diethylzinc to aryl and heteroaryl aldehydes.
Ananthi N, et al.
Tetrahedron Asymmetry, 20(15), 1731-1735 (2009)
Ana Caroline Costa Sa et al.
Scientific reports, 9(1), 8795-8795 (2019-06-21)
Growing evidence suggests that peripheral factors to the brain driving neuro-inflammation could affect Alzheimer's Disease (AD) and Parkinson's Disease (PD) severity. Herpes simplex virus type 1 (HSV1) infection has been associated with AD while other related viruses, including cytomegalovirus (CMV)
María José Ojeda-Montes et al.
Future medicinal chemistry, 9(18), 2129-2146 (2017-11-28)
Extracts from Ephedra species have been reported to be effective as antidiabetics. A previous in silico study predicted that ephedrine and five ephedrine derivatives could contribute to the described antidiabetic effect of Ephedra extracts by inhibiting dipeptidyl peptidase IV (DPP-IV).
Hesham Abdul Aziz et al.
The journal of sexual medicine, 6(3), 682-695 (2009-01-16)
Khat (Catha edulis) is an evergreen tree/shrub that is thought to affect sexual motivation or libido. Its positive effect on sexual desire is more frequently observed in females than in males and occurs when khat is chewed. Thus, khat's effects

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