Tang, Hongying et al. published their research in Journal of Power Sources in 2021 | CAS: 1632-83-3

1-Methylbenzimidazole (cas: 1632-83-3) belongs to imidazole derivatives. The solubility of imidazoles in ethers is lower than that in alcohols and decreases with increasing chain length of the ethers . In contrast, the solubility of benzimidazoles in alcohols (C3–C6) is higher than in water and generally decreases with a Many drugs contain an imidazole ring, such as certain antifungal drugs, the nitroimidazole series of antibiotics, and the sedative midazolam.Reference of 1632-83-3

On the stability of imidazolium and benzimidazolium salts in phosphoric acid based fuel cell electrolytes was written by Tang, Hongying;Aili, David;Geng, Kang;Gao, Jian;Li, Qingfeng;Li, Nanwen. And the article was included in Journal of Power Sources in 2021.Reference of 1632-83-3 This article mentions the following:

Polymers containing organic cations are considered as promising materials for phosphoric acid (PA) doped high temperature polymer electrolyte membranes (HT-PEMs) due to higher PA retention and wider operation temperature range. However, the thermal/acidic stability of the organic cations remains to be determined Herein, a series of model cations based on various (benz)imidazoliums are designed and prepared to assess the stability on mol. level under simulated operating conditions for HT-PEM fuel cell. NMR anal. indicates that C2, C4 and C5 substitutions show little effect on the stability while N1 and N2 substitutions show opposite effect. Among the N-functionalized derivatives, N, N-dimethyl (benz)imidazolium cations are fully stable while N-benzyl imidazoliums degraded severely due nucleophilic substitution with H2PO4–. On this background, blend membranes based on fully methylated polybenzimidazole (PBI) are prepared, and the swelling is balanced by introducing pristine PBI. The proton conductivity of the PA doped blending membrane with IEC of 1.2 mmol g-1 reaches 165 mS cm-1 and a peak power d. of 863 mW cm-2 is demonstrated in H2/O2 fuel cell test. These results lay a solid foundation for designing and developing durable high-performance HT-PEMs and fuel cell devices for green energy conversion applications. In the experiment, the researchers used many compounds, for example, 1-Methylbenzimidazole (cas: 1632-83-3Reference of 1632-83-3).

1-Methylbenzimidazole (cas: 1632-83-3) belongs to imidazole derivatives. The solubility of imidazoles in ethers is lower than that in alcohols and decreases with increasing chain length of the ethers . In contrast, the solubility of benzimidazoles in alcohols (C3–C6) is higher than in water and generally decreases with a Many drugs contain an imidazole ring, such as certain antifungal drugs, the nitroimidazole series of antibiotics, and the sedative midazolam.Reference of 1632-83-3

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem