1-Pentyn-3-ol, 3-methyl-, allophanate 3-Methyl-pentin-1-allophanat-(3) [German] 4-03-00-00134 (Beilstein Handbook Reference) 77967-00-1 ALLOPHANIC ACID, 3-METHYL-1-PENTYN-3-YL ESTER BRN 1781912