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317500

Sigma-Aldrich

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

98%

Synonym(s):

(1S,2R)-2-Amino-1-phenyl-1-propanol, erythro-α-(1-aminoethyl)benzyl alcohol, D-(+)-Norephedrine, Phenylpropanolamine

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About This Item

Linear Formula:
C6H5CH(OH)CH(CH3)NH2
CAS Number:
37577-28-9
Molecular Weight:
151.21
Beilstein:
2802896
MDL number:
MFCD00064411
UNSPSC Code:
12352116
PubChem Substance ID:
24859081
NACRES:
NA.22

Quality Level

200

Assay

98%

form

solid

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.

Pictograms

Exclamation mark
GHS07

Signal Word

Warning

Hazard Statements

H302,H315,H319,H335

Precautionary Statements

P261 - P305 + P351 + P338

Hazard Classifications

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

Target Organs

Respiratory system

Storage Class Code

11 - 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

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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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)
Dendritic catalysts for asymmetric transfer hydrogenation based (1S, 2R)-norephedrine derived ligands.
Liu PN, et al.
Tetrahedron Asymmetry, 14(16), 2481-2485 (2003)
Stefan W Toennes et al.
Journal of pharmaceutical and biomedical analysis, 179, 113008-113008 (2019-12-02)
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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)
Archana Hinduja
Frontiers in neurology, 11, 71-71 (2020-03-03)
Background: Posterior reversible encephalopathy syndrome (PRES) is an acute neurotoxic syndrome that is characterized by a spectrum neurological and radiological feature from various risk factors. Common neurological symptoms includes headache, impairment in level of consciousness, seizures, visual disturbances, and focal
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Chromatograms

application for HPLC

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