2H-1-BENZOPYRAN, 6,7-DIMETHOXY-2,2-DIMETHYL- 5-17-05-00288 (Beilstein Handbook Reference) 6,7-Dimethoxy-2,2-dimethyl-2H-benzo(b)pyran 6,7-Dimethoxy-2,2-dimethyl2H-1-benzopyran 644-06-4 AI3-36847 Ageratochromene BRN 0160683 EINECS 211-408-5 NSC 318792 PRICOCENE II Precocen 2 Precocene 2 Precocene II