Section 06 Products of the chemical or allied 29 Organic chemicals 29 34 Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds 29 34 30 - Compounds containing in the structure a phenothiazine ring-system (whether or not hydrogenated), not further fused Commodity Code Description 29 34 30 00 - Compounds containing in the structure a phenothiazine ring-system (whether or not hydrogenated), not further fused