28211-96-3

Basic information

• Product Name: methyl 7,12-diethyl-20-(2-methoxy-2-oxoethyl)-18-(3-methoxy-3-oxopropyl)-3,8,13,17-tetramethylporphyrin-2-carboxylate
• Synonyms: 21H,23H-Porphine-2-propanoic acid, 8,13-diethyl-18-(methoxycarbonyl)-20-(2-methoxy-2-oxoethyl)-3,7,12,17-tetramethyl-, methyl ester (9CI)
• CAS NO: 28211-96-3
• Molecular Formula: C₃₇H₄₂N₄O₆
• Molecular Weight: 638.7526
• Mol File: 28211-96-3.mol
• Article Data: 1

Chemical Properties

• Boiling Point: 1066.4°C at 760 mmHg
• Flash Point: 598.7°C
• Density: 1.219g/cm³
• Vapor Pressure: 0mmHg at 25°C
• Refractive Index: 1.586
• CAS DataBase Reference: methyl 7,12-diethyl-20-(2-methoxy-2-oxoethyl)-18-(3-methoxy-3-oxopropyl)-3,8,13,17-tetramethylporphyrin-2-carboxylate(CAS DataBase Reference)
• NIST Chemistry Reference: methyl 7,12-diethyl-20-(2-methoxy-2-oxoethyl)-18-(3-methoxy-3-oxopropyl)-3,8,13,17-tetramethylporphyrin-2-carboxylate(28211-96-3)
• EPA Substance Registry System: methyl 7,12-diethyl-20-(2-methoxy-2-oxoethyl)-18-(3-methoxy-3-oxopropyl)-3,8,13,17-tetramethylporphyrin-2-carboxylate(28211-96-3)

Safety Data

• Hazardous Substances Data: 28211-96-3(Hazardous Substances Data)

Upstream product

• 19660-77-6 chlorin e6 
• 186581-53-3 diazomethane 
• 25404-05-1 rhodoporphyrin-15-acetic acid 

Relevant articles and documents

The Synthetic Utility and Mechanisms of the Hydrogen Iodide Isomerization and the Oxo Reaction in the Modification of Chlorophyll Derivatives

Hydrogen iodide in glacial acetic acid has served as a versatile reagent in modifications of chlorophyll and its closely related derivatives, e. g. pheophorbides and 3-vinylchlorins, to 3-ethylporphyrins (HI isomerization) or to 31-oxoporphyrins (oxo reaction).Nevertheless, the mechanisms of these important reactions have remained obscure.In this paper, the reaction conditions used by H.Fischer for the HI isomerization and the oxo reaction are thoroughly examined.Secondly, a carbocation rearrangement mechanism is suggested for the the HI isomerization.Thirdly, the oxo reaction is rationalized by means of a reaction between a chlorin 31-carbocation and water nucleophile and subsequent dehydrogenation by triplet oxygen.Finally, some related unsolved problems of chlorophyll chemistry are briefly discussed.