| Formula | C5H8 | 
| Molecular weight | 68.12 | 
| Details: | 2-methylbuta-1,3-diene | 
| Total Number of Peaks | 23 | 
| Record | Massbank Spectrum MSBNK-Fac_Eng_Univ_Tokyo-JP006764 | 
| Link | 6557 | 
| Base Peak | 67 | 
| 2nd most intense Peak | 68 | 
| 3rd most intense Peak | 53 | 
| Formula | C5H8 | 
| Molecular weight | 68.12 | 
| Details: | 2-methylbuta-1,3-diene | 
| Total Number of Peaks | 16 | 
| Record | Massbank Spectrum MSBNK-Fac_Eng_Univ_Tokyo-JP008933 | 
| Link | 6557 | 
| Base Peak | 67 | 
| 2nd most intense Peak | 68 | 
| 3rd most intense Peak | 53 |