1381801-46-2

Upstream product

• 1380855-46-8 (E,Z)-4-(1,1'-biphenyl-4-yl)-3-methoxycarbonyl-4-(3-methoxyphenyl)but-3-enoic acid 
• 108-24-7 acetic anhydride 

Downstream Products

• 1380855-55-9 3,3-bis(4-methoxyphenyl)-5-methoxy-11-phenyl-13,13-dimethyl-3H,13H-indeno[2',1':3,4]naphtho[1,2-b]pyran 

Relevant academic research and scientific papers

PHOTOCHROMIC COMPOUNDS AND COMPOSITIONS

Described herein are compounds (III) comprising an indeno[2',3', 3, 4] naptho [1,2-b] pyran structure. Such compounds may be useful for their photochromic properties, and be use in certain photochromic compositions. Such compositions may further comprise other photochromic compositions and/or materials. Additionally, such compounds and/or compositions may be suitable for preparing certain photochromic articles.