14531-53-4 Carbonium, methyl- Methyl carbonium ion Methyl cation Methyl cation(1+) Methyl ion (CH31+) Methyl ion(1+) Methyl monocation Methyl(1+) Methyl(1+) ion Methylium (8CI,9CI) Methylium (CH3+) Methylium cation Methylium ion (CH31+) Methylium-t3 (8CI,9CI) [3H] methylium