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Purpurin 18

红紫素 18

Also known as: Purpurin 18, (15S,16S)-10-Ethenyl-5-ethyl-16,18-dihydro-6,11,15,22-tetramethyl-18,20-dioxo-15H,20H-4,7:14,17-diimino-2,21-metheno-9,12-nitrilopyrano[4,3-b]azacyclononadecine-16-propanoic Acid, (17S,18S)-18-(2-Carboxyethyl)-12-vinyl-7-ethyl-17,18-dihydro-3,8,13,17-tetramethyl-21H,23H-porphyrin-2,20-dicarboxylic acid 2,20-anhydride, (17S-trans)-18-(2-Carboxyethyl)-12-ethenyl-7-ethyl-17,18-dihydro-3,8,13,17-tetramethyl-21H,23H-porphine-2,20-dicarboxylic acid cyclic 2,20-anhydride, 15H-9,12-Imino-21,2-metheno-4,7:17,14-dinitrilopyrano[4,3-b]azacyclononadecine-16-propanoic acid, 10-ethenyl-5-ethyl-1,16,18,20-tetrahydro-6,11,15,22-tetramethyl-18,20-dioxo-, (15S,16S)-, 3,8,13,17β-Tetramethyl-7-ethyl-12-ethenyl-18α-(2-carboxyethyl)-17,18-dihydro-21H,23H-porphyrin-2,20-dicarboxylic acid 2,20-anhydride, 3-[(1E,10Z,15Z,19Z,22S,23S)-12-Ethyl-13,18,22,27-tetramethyl-3,5-dioxo-17-vinyl-4-oxa-8,24,25,26-tetraazahexacyclo[19.2.1.1.1.1.0]heptacosa-1,6,9(27),10,12,14(26),15,17,19,21(24)-decaen-23-yl]propanoic acid, Chlorophyll Impurity 3, Purpurin a, Purpurin-18

Purpurin 18 (CAS 25465-77-4) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C33H32N4O5 and a molecular weight of 564.631 g/mol. It is also known as (15S,16S)-10-Ethenyl-5-ethyl-16,18-dihydro-6,11,15,22-tetramethyl-18,20-dioxo-15H,20H-4,7:14,17-diimino-2,21-metheno-9,12-nitrilopyrano[4,3-b]azacyclononadecine-16-propanoic Acid, (17S,18S)-18-(2-Carboxyethyl)-12-vinyl-7-ethyl-17,18-dihydro-3,8,13,17-tetramethyl-21H,23H-porphyrin-2,20-dicarboxylic acid 2,20-anhydride and (17S-trans)-18-(2-Carboxyethyl)-12-ethenyl-7-ethyl-17,18-dihydro-3,8,13,17-tetramethyl-21H,23H-porphine-2,20-dicarboxylic acid cyclic 2,20-anhydride. Key properties include a boiling point of 1046.1±65.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 586.5±34.3 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
25465-77-4
Jingsj CID
J-1969215-3
Molecular Formula
C33H32N4O5
Chinese Name
红紫素 18
Molecular Weight
564.631 g/mol
Category
Organic Compounds
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point1046.1±65.0 °C at 760 mmHg
Density1.3±0.1 g/cm3
Flash Point586.5±34.3 °C

Frequently Asked Questions

What is the CAS number of Purpurin 18?

The CAS number of Purpurin 18 is 25465-77-4.

What are the molecular formula and molecular weight of Purpurin 18?

Purpurin 18 has molecular formula C33H32N4O5 and molecular weight 564.631 g/mol.

Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "Purpurin 18 (CAS 25465-77-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1969215-3 (accessed 2026-10-22).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.