Table 3 Diterpenoid compounds identified in the two studied charcoal-bearing samples from 88-m- and 93-m-depth of borehole RMB#2 in the Rajmahal Basin
Peak number | Compound | Base peak | Molecular ion |
|---|---|---|---|
Saturated compounds | |||
 1 | Unidentified Pimarane-type compound | 123 | 262 |
 2 | 18-Norpimarane | 233 | 262 |
 3 | Sandaracopimaradiene? | 257 | 272 |
 4 | 16α(H)-Phyllocladane | 123 | 274 |
Aromatic compounds | |||
 1 | 18,19-Bisnorsimonellite | 209 | 224 |
 2 | Retene | 219 | 234 |
 3 | 18-/19-Norabieta-4 (19),8,11,13-tetraene? | 239 | 254 |
 4 | Dehydroabietane | 255 | 270 |
 5 | Simonellite | 237 | 252 |
 6 | C1-Simonellite? | 251 | 266 |