| Item | Condition |
| GC-MS model | Agilent 7890A GC/EI/MSD (Agilent 5975 C) |
| Column | HP 5 MS (5% Phenyl methyl siloxane 30 m, 250 μm) |
| Detector temperature | 280˚C |
| Oven temperature condition | 40˚C (5 min), 5˚C/min, 240˚C (10 min) |
| Carrier gas | He 9 kPa, 1.5 mL/min |
| Injection amount | 1.0 μl |