Abstract The optimized synthesis of [5-oxo-4. 4-diphenylimidazolidin-2-ylidene]cyanamide. which is known as 2-cyanoguanidinophenytoin (CNG-DPH) (3). and (imidazo[4. https://www.roneverhart.com/Annie-Brocoli-Noel-en-spectacle/