| 2 | Acetylene Ethyne C2H2 |
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 |
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| 3 | Propyne C3H4 |
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| 4 | Butyne C4H6 |
1-Butyne |  |
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|
| 2-Butyne |  |
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| 5 | Pentyne C5H8 |
1-Pentyne |  |
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| 2-Pentyne |  |
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| 6 | ||||||
| 7 | ||||||
| 8 | ||||||
| 9 | ||||||
| 10 | ||||||