Internal Standard Stock Solution, 1.2ml, nonane

4-Fluoro-o-xylene, neat, Solvent-neat, Unit 0,5mL, # of units-1, Cas.no. 452-64-2

m-Quarterphenyl, neat, Solvent-neat, Unit 5mg, # of units-1, Cas.no. 1166-18-3

3ß-Acetoxybetulinic acid, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 10376-50-8