E4250 SIGMA
(−)-Epinephrine
Synonym: (−)-Adrenalin (R)-(−)-34-Dihydroxy-α-(methylaminomethyl)benzyl alcohol L-Adrenaline L-Epinephrine
CAS Number 51-43-4  
Linear Formula (HO)2C6H3CH(OH)CH2NHCH3  
Molecular Weight 183.20
Appearance (Color)             White to Off-White
Appearance (Form)              Powder
Solubility (Color)             Colorless to Faint Yellow-Brown
Solubility (Turbidity)         Clear
at 50 mg/ml in 0.5 M HCl
Specific Rotation              -52.0 - -50.0 °
(c = 2 in 0.5 M HCl at 25 deg C)
Infrared spectrum              Conforms to Structure
Titration by HCLO4             > 99 % _
Purity (HPLC)                  > 99 %