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Formulas which begin with C₄H₅

All formulas are in Hill order.

• C₄H₅ (But-2-yn-1-yl radical)
• C₄H₅ (1-Butyn-3-yl radical)
• C₄H₅^-______ (6 species)
• C₄H₅As______ (2 species)
• C₄H₅Br______ (12 species)
• C₄H₅Cl______ (51 species)
• C₄H₅F______ (22 species)
• C₄H₅D______ (2 species)
• C₄H₅I______ (3 species)
• C₄H₅K______ (2 species)
• C₄H₅N______ (87 species)
• C₄H₅NaO₂ (Sodium (2-methyl-propenoate))
• C₄H₅O______ (15 species)
• C₄H₅P (C4H5P)
• C₄H₅S⁺ (Thiophene, protonated)