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Upstream product

• 619-65-8 4-cyanobenzoic Acid 
• 101851-26-7 5-amino-N-(tert-butyloxycarbonyl)-1,3,3-trimethyl-6'-nitro-spiro(indole-2,2'-<2H-1>benzopyran) 
• 101851-25-6 5-amino-N-(tert-butyloxycarbonyl)-1,3,3-trimethyl-2-methyleneindoline 
• 6872-05-5 5-amino-1,3,3-trimethyl-2-methylene-indoline 
• 123-08-0 4-hydroxy-benzaldehyde 
• 65731-06-8 4-(4'-cyanobenzoyloxy)benzaldehyde 
• 92787-98-9 5-amino-1,3,3-trimethyl-6'-nitrospiro(indole-2,2'-<2H-1>-benzopyran) 

Relevant academic research and scientific papers

Quasi-Liquid Crystals of Thermochromic Spiropyrans. A Material Intermediate between Supercooled Liquids and Mesophases

Crystals of thermochromic spiropyrans containing mesogenic groups give iosotropic melts.However, these materials from metastable films with mesogenic properties below the crystal melting points.A strong birefringence of the films appears concommitantly wi