Chamaecyparis obtusa (Siebold & Zucc.) Endl. (Cupressaceae) is known to produce a variety of antimicrobial substances. In the present study, components three lots essential oil from C. were analyzed by GCMS. It was confirmed that thujopsene and pinene common markers. addition, we report indoor space disinfectant effects products containing (PO100, PO500, PO1000). PO100 PO500 could effective...