Table 2. Experimental details.

Crystal data
Chemical formula	C7H10N2O4
M r	186.17
Crystal system, space group	Monoclinic, P21/n
Temperature (K)	100
a, b, c ()	10.7862(8), 6.7093(5), 11.7365(6)
()	98.632(6)
V (3)	839.72(10)
Z	4
Radiation type	Mo K
(mm1)	0.12
Crystal size (mm)	0.05 0.05 0.05
Data collection
Diffractometer	Rigaku Saturn724+
Absorption correction	Multi-scan (CrysAlis PRO; Agilent, 2014 ▸)
T min, T max	0.809, 1.000
No. of measured, independent and observed [I > 2(I)] reflections	5354, 1724, 1354
R int	0.034
(sin /)max (1)	0.625
Refinement
R[F 2 > 2(F 2)], wR(F 2), S	0.037, 0.095, 1.05
No. of reflections	1724
No. of parameters	138
No. of restraints	2
H-atom treatment	H atoms treated by a mixture of independent and constrained refinement
max, min (e 3)	0.29, 0.20

Computer programs: CrystalClear-SM Expert (Rigaku, 2012 ▸), CrysAlis PRO (Agilent, 2014 ▸), SHELXT (Sheldrick, 2015a ▸), SHELXL2014/6 (Sheldrick, 2015b ▸), XP in SHELXTL (Sheldrick, 2008 ▸8) and Mercury (Macrae et al., 2006 ▸) and publCIF (Westrip, 2010 ▸).