chemical formula of different type of chlorophyll

• Chlorophyll a : C₅₅H₇₂MgN₄O₅ (137)
  
• Bacteriochlorophyll a : C₅₅H₇₄MgN₄O₆ (140), T₁ - 8240 cm^-1 (triethylamine), - 8190 cm^-1 (pyridine/2-methylTHF), - 7580 cm^-1 (Rsp. molischianum LH2)
  
• Bchl a without phytol chain : C₃₅H₃₆MgN₄O₆ (82)
  
• Spheroidene (10) : C₄₁H₆₀O, T₁ - 7050 cm^-1 (14100 cm^-1/2), - 6920 cm^-1 (Rb. sphaeroides 2.4.1 LH2)
  
• Carotene (11) : C₄₀H₅₆, T₁ - 7400 cm^-1 (C₆D₆)
  
• Lycopene (11) : C₄₀H₅₆, T₁ - 6870 cm^-1 (Rsp. molischianum LH2)
  
• Phytol : C₂₀H₄₀O