| Propanoic acid, 2-methyl-, anhydride |
| 2-methylpropanoic acid anhydride |
| 2-methylpropanoic anhydride |
| anhydride isobutyrique |
| isobutyric acid anhydride |
| isobutyric anhydride |
| isobutyryl anhydride |
| isobutyryl oxide |
| 2-methyl-propanoic aci anhydride |
| isobutyricanhydride |
| Propanoic acid,2-methyl-,anhydride |
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