Quartenylic
Quar´ten`yl´ic
| a. | 1. | (Chem.) Pertaining to, or designating, an acid of the acrylic acid series, metameric with crotonic acid, and obtained as a colorless liquid; - so called from having four carbon atoms in the molecule. Called also isocrotonic acid. |
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.