Specification Sheet
Product Name Colchicine,
≥95% (HPLC), powder
Product Number C9754
Product Brand SIGMA
CAS Number 64-86-8
Molecular Weight 399.44
 
TEST SPECIFICATION
Appearance (Color) White to Yellow
Appearance (Form) Powder
Solubility (Color) Yellow to Yellow-Green
Solubility (Turbidity) Clear to Slightly Hazy
  at 50 mg/ml in ethanol
Carbon 62.8 - 67.5 %
Nitrogen 3.2 - 3.8 %
Solvent Content (by GC) ≤10 %
  Ethyl Acetate
Proton NMR spectra Conforms to Structure
Purity (HPLC) ≥95 %
Performance Pass
Recommended Retest Period -------------------------
  3 Years