Dimethylhydantoin

Dimethylhydantoin (CAS 77-71-4), also known as DMH or Dantoin DMH, is a cyclic urea derivative.

Where is Dimethylhydantoin used?

• Pharmaceuticals: building block for active intermediates and hydantoin-derived APIs, where its ring structure enables controlled chemical modification
• Personal care: backbone of DMDM hydantoin, a preservative system used in shampoos and skin care products
• Biocide synthesis: buffering agent and precursor to halogenated hydantoins, chlorine- and bromine-releasing biocides used in cooling towers and pool sanitation systems
• Specialty chemicals: pH buffer in reaction systems requiring stable mildly acidic conditions
• It serves as a precursor in antimicrobial formulations.

Good to know: Pharmaceutical-grade material is available for API synthesis and regulated applications requiring high purity.

Commercial specifications

• Bulk quantities in multi-kilogram bags or fiber drums
• Smaller packaging for laboratory and development use