EPHEDRINE

(1R,2S)-2-(methylamino)-1-phenylpropan-1-ol

Synonyms: L-ephedrine, (−)-Ephedrine, Ephedrine HCl (hydrochloride Form)

Molecular Formula: C₁₀H₁₅NO

Molecular Weight: 165.23 G/mol (free Base), 203.68 G/mol (hydrochloride)

CAS Number: 108-92-7 (free Base), 134-41-6 (HCl)

Structure: Contains A Phenyl Ring, A Secondary Amine, And A Hydroxyl Group.

Appearance: White Crystalline Powder Or Colorless Crystals

Odor/Taste: Slightly Bitter, Odorless

Solubility:

• Soluble In Water (high For HCl Salt)

• Soluble In Alcohol, Slightly Soluble In Chloroform

Melting Point:

• Ephedrine HCl: 187–189 °C

• Free Base: ~34–36 °C

Optical Rotation: Typically +27° To +30° (HCl, 10% Solution)