De-Long Shen

4-Methyl-N-[(2-oxo-1,3-thia-zolidin-3-yl)carbon-yl]benzene-sulfonamide.

The asymmetric unit of the title compound, C11H12N2O4S2, contains two independent molecules with similar dihedral angles of 76.7 (1) and 77.3 (1)° between the mean planes of the five- and six-membered rings. In both molecules, the amino groups are involved in intramolecular N—H⋯O hydrogen bonds. In the crystal structure, weak intermolecular C—H⋯O hydrogen bonds link molecules into ribbons extended along the a axis.

3-[(3-Ethyl-1-methyl-4-nitro-1H-pyrazol-5-yl)carbonyl]-1H-benzimidazole

In the title compound, C14H13N5O3, the dihedral angle formed between the five-membered pyrazole and the benzimidazole ring system is 68.2 (2)°.

2‐(4,6‐Dimethoxy­pyrimidin‐2‐yl­oxy)‐6‐fluoro‐N‐(3‐methyl­pyrid­yl)benzyl­amine

In the title compound, C19H19FN4O3, the two heterocyclic ring substituents lie on the same side of the central benzene ring.

Bis­[3-ethyl-1-methyl-5-(2-oxo­thia­zolidin-3-yl­carbonyl)­pyrazol-4-yl] di­sulfide

The title compound, C20H24N6O4S4, has non-crystallographic twofold symmetry about the mid-point of the disulphide bond.

3‐(5‐Ethyl‐2‐methyl‐4‐nitro‐2H‐pyrazole‐3‐carbonyl)­oxazolidin‐2‐one

The title compound, C10H12N4O5, shows an orthogonal relationship between the five-membered rings.