Etioporphyrin I

see insert in spectrum; C^H^N^; MW = 478 Phillips Petroleum Co., Bartlesvi7le, OK, USA.

suspension in methanol; 10 yg ferromagnetic tube; T 770°C

remarks - The intense peak group at m/z 67, 68 is thought to represent C5-alkynes derived from the alkyl-substituted rings. This unusual pyrolysis mechanism may well be unique for this type of compound.

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120 140 m/z

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