发明申请
US20150141663A1 Fused Ring Indeno Compounds For Preparation Of Photochromic Compounds 有权
用于制备光致变色化合物的稠环烯茚化合物

Fused Ring Indeno Compounds For Preparation Of Photochromic Compounds
摘要:
The present invention relates to intermediate compounds represented by the following Formula (I-A), The intermediate compounds of the present invention, such as represented by Formula (I-A), can be used to prepare photochromic compounds, such as photochromic fused ring indenopyran compounds, including but not limited to photochromic fused ring indeno-naphtho-pyran compounds.
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