(−)-α-Methyl-L-DOPA sesquihydrate, USP24 Available in production quantities.
Assay (anhydrous basis)
98.0 – 101.0%
Appearance
White or yellowish-white crystalline powder
Specific rotation
−25 – −28°
Heavy metals
≤10 ppm
Water
10.0 –13.0% w/w
Residue on ignition
≤0.10%
Acidity (0.1N NaOH)
≤0.50 ml/g
3-O-Methyl methyldopa
≤0.50%
Organic volatile materials
According to USP24
This material has been tested and conforms to the requirements of USP24 but has not necessarily been analyzed, stored, or packaged according to GMP standards. It may be possible to obtain GMP material by special request.