95%
solid
<5% cis-5-norbornene-endo-2,3-dicarboxylic anhydride
103-105 °C (lit.)
[H]C1(C2CC(C=C2)C1([H])C(=O)OC)C(O)=O
1S/C10H12O4/c1-14-10(13)8-6-3-2-5(4-6)7(8)9(11)12/h2-3,5-8H,4H2,1H3,(H,11,12)/t5-,6+,7-,8+/m1/s1
JYZKYCYHXBQTCY-CWKFCGSDSA-N