| 英文名称: | | Pyridine, alkyl derivs. | | Paraldehyde and ammonia reaction product | | Pyridine bases | | Pyridines, polyalkylated, higher boiling fraction | | Pyridines, polyalkylated, lower boiling fraction | | Pyridines, polyalkylated: polyalkylated pyridines | | alkyl pyridines,mixed | | alkylpyridines,mixed | | polyalkylated pyridines | | Pyridine,alkyl derivs. | | Pyridines,polyalkylated,higher boiling fraction | | Pyridines,polyalkylated,lower boiling fraction | | Pyridines,polyalkylated: polyalkylated pyridines |
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