| 英文名称: | | 1-b)pyran-2-carboxylic acid, 3-oxo-3h-naphtho( ethyl ester | | 3-oxo-3h-naphtho(2,1-b)pyran-2-carboxylic acid ethyl ester | | 1-b]pyran-2-carboxylic acid, 3-oxo-3h-naphtho[ ethyl ester | | 5,6-benzocoumarin-3-carboxylic acid ethyl ester | | 5,6-benzocumarin-3-carbonic acid ethyl ether | | belophar kla | | compound 13-61 | | optical bleach 13-61 | | 1-b)pyran-2-carboxylic acid, 3-oxo-3h-naphtho( ethylester |
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