CAS No 26608-34-4 , 3,7,12,17-tetraethyl-2,8,13,18-tetramethyl-21,22-dihydroporphyrin

Name: 3,7,12,17-tetraethyl-2,8,13,18-tetramethyl-21,22-dihydroporphyrin
Synonyms: AC1L3ISZ; 3,8,13,17-tetraethyl-2,7,12,18-tetramethylporphyrin; NSC409895; SureCN200421; NSC-409895; SureCN842851;3,7,12,17-tetraethyl-2,8,13,18-tetramethyl-21,22-dihydroporphyrin;
CAS Registry Number:26608-34-4
Refractive index: 1.593
Molecular Weight: 478.67092
InchiKey: SOZGZCJUYXLGOI-UHFFFAOYSA-N
InChI: InChI=1S/C32H38N4/c1-9-21-17(5)25-13-26-18(6)23(11-3)31(34-26)16-32-24
(12-4)20(8)28(36-32)15-30-22(10-2)19(7)27(35-30)14-29(21)33-25/h13-16,
34,36H,9-12H2,1-8H3
Molecular Formula: C₃₂H₃₈N₄
Molecular Structure:

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References of 3,7,12,17-tetraethyl-2,8,13,18-tetramethyl-21,22-dihydroporphyrin

Title: Etioporphyrin
CAS Registry Number: 26608-34-4
CAS Name: 2,7,12,18-Tetraethyl-3,8,13,17-tetramethyl-21H,23H-porphine
Synonyms: 1,3,5,8-tetramethyl-2,4,6,7-tetraethylporphine; etioporphyrin III; mesoetioporphyrin
Molecular Formula: C32H38N4
Molecular Weight: 478.67
Percent Composition: C 80.29%, H 8.00%, N 11.70%
Literature References: Occurs in Bavarian oil shale, crude petr, ozokerite, amber, cannel coal and other hard varieties of bituminous coal: Treibs, Ann. 510, 60 (1934); 517, 184 (1935); Angew. Chem. 49, 682 (1936). Prepd by decarboxylation of mesoporphyrin IX: Fischer, Treibs, Ann. 466, 191, 206 (1928). Synthesis: Fischer, Stangler, Ann. 462, 265 (1928); Johnson et al., J. Chem. Soc. 1959, 3416. Structure: Abraham et al., ibid. 1961, 3468. Review: Rimington, Kennedy, in M. Florkin, H. S. Mason, Comparative Biochemistry (Academic Press, New York, 1962) pp 557-614.
Properties: Long prismatic needles or butterflies from pyridine or from chloroform-petr ether, mp 360-363°. pKa 18. Absorption max: 246, 269, 396, 497, 532, 566, 620, 645 nm (log e 3.90, 3.89, 5.22, 4.13, 3.99, 3.81, 3.65, 2.62).
Melting point: mp 360-363°
pKa: pKa 18
Absorption maximum: Absorption max: 246, 269, 396, 497, 532, 566, 620, 645 nm (log e 3.90, 3.89, 5.22, 4.13, 3.99, 3.81, 3.65, 2.62)

Derivative Type: Copper salt
Molecular Formula: C32H36N4Cu
Molecular Weight: 540.20
Percent Composition: C 71.15%, H 6.72%, N 10.37%, Cu 11.76%
Properties: Red needles from pyridine-acetic acid.

Derivative Type: Magnesium salt
Molecular Formula: C32H36N4Mg
Molecular Weight: 500.96
Percent Composition: C 76.72%, H 7.24%, N 11.18%, Mg 4.85%
Properties: Crystals from methanol.