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. 2018 Mar 16;74(Pt 4):530–534. doi: 10.1107/S2056989018004188
C20H18O4 F(000) = 680
Mr = 322.34 Dx = 1.284 Mg m3
Monoclinic, P21/c Melting point = 406–408 K
Hall symbol: -P 2ybc Cu Kα radiation, λ = 1.54184 Å
a = 18.684 (2) Å Cell parameters from 1499 reflections
b = 6.5431 (5) Å θ = 4.7–63.4°
c = 13.6688 (14) Å µ = 0.73 mm1
β = 93.627 (11)° T = 298 K
V = 1667.7 (3) Å3 Prism, colorless
Z = 4 0.40 × 0.12 × 0.04 mm