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Merck
CN

282553

(1R,2S)-(−)-Norephedrine

99%

Synonym(s):

(1R,2S)-2-Amino-1-phenyl-1-propanol, L-(−)-Norephedrine

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About This Item

Linear Formula:
C6H5CH(OH)CH(CH3)NH2
CAS Number:
492-41-1
Molecular Weight:
151.21
Beilstein:
2207678
EC Number:
207-755-7
MDL number:
MFCD00008079
UNSPSC Code:
12352116
PubChem Substance ID:
24857054

Key Documents

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Assay

99%

form

solid

optical activity

[α]20/D −41°, c = 7 in 1 M HCl

mp

51-53 °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-/m0/s1

InChI key

DLNKOYKMWOXYQA-CBAPKCEASA-N

Gene Information

rat ... Adra1a(29412), Adra1b(24173), Adra1d(29413)

Pictograms

Exclamation mark
GHS07

Signal Word

Warning

Hazard Statements

H302,H315,H319,H335

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

Regulatory Information

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Certificates of Analysis (COA)

Lot/Batch Number
MKBD8273V
STBC4716V
MKBD8273
STBB4870
01804AH

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Raz Krizevski et al.
Journal of ethnopharmacology, 114(3), 432-438 (2007-10-12)
Khat (Catha edulis Forsk., Celastraceae) is a perennial shrub that was introduced to Israel by Yemenite immigrants. Khat young leaves are chewed as a stimulant. The main stimulating active principles in this plant are the phenylpropylamino alkaloids (-)-cathinone [(S)-alpha-aminopropiophenone], (+)-cathine
Ying Shi et al.
Journal of chromatography. A, 1218(42), 7655-7662 (2011-09-09)
A method for simultaneous determination of eight adulterants including two appetite suppressants, two energy expenditure-enhancing drugs, one diuretic and three cathartics in slimming functional foods by high performance liquid chromatography with electrospray ionization-tandem mass spectrometry (HPLC-ESI-MS/MS) was established. After samples
Toshiaki Nagai et al.
Journal of analytical toxicology, 36(2), 96-105 (2012-02-18)
A method for identifying the enantiomers of N,O-di-trifluoroacetylated ephedrine (EP) and norephedrine (NE) and the enantiomers of pseudoephedrine (PEP) and pseudonorephedrine (PNE) in plasma was developed using chiral capillary gas chromatography-mass spectrometry (GC-MS) with selected ion monitoring (SIM). N,O-Di-trifluoroacethyl (TFA)
Hyeon-Kyu Lee et al.
The Journal of organic chemistry, 77(12), 5454-5460 (2012-05-25)
Each of the enantiomers of both norephedrine and norpseudoephedrine were stereoselectively prepared from the common, prochiral cyclic sulfamidate imine of racemic 1-hydroxy-1-phenyl-propan-2-one by employing asymmetric transfer hydrogenation (ATH) catalyzed by the well-defined chiral Rh-complexes, (S,S)- or (R,R)-Cp*RhCl(TsDPEN), and HCO(2)H/Et(3)N as
John S Chappell et al.
Forensic science international, 195(1-3), 108-120 (2009-12-29)
A primary concern with the forensic analysis of the khat plant (Catha edulis) has been the need to preserve the principle psychoactive component, cathinone, which converts to the less-active substance, cathine, after harvesting. The loss of cathinone has serious legal
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Chromatograms

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