Al-Said, Naim H. et al. published their research in Jordan Journal of Chemistry in 2007 | CAS: 5930-92-7

Ethyl 4-nitro-1H-pyrrole-2-carboxylate (cas: 5930-92-7) belongs to esters. Esters typically have a pleasant smell; those of low molecular weight are commonly used as fragrances and are found in essential oils and pheromones. Esters are more polar than ethers but less polar than alcohols. They participate in hydrogen bonds as hydrogen-bond acceptors, but cannot act as hydrogen-bond donors, unlike their parent alcohols. This ability to participate in hydrogen bonding confers some water-solubility.SDS of cas: 5930-92-7

Synthetic studies towards bis-heterodimeric netropsin analogs was written by Al-Said, Naim H.;Shawakfeh, Khaled Q.. And the article was included in Jordan Journal of Chemistry in 2007.SDS of cas: 5930-92-7 This article mentions the following:

An expedient synthetic method has been developed for the preparation of a properly functionalized pyrrole-imidazole template suitable for the construction of heterodimeric bislexitropsins. The pyrrole-imidazole carboxamide derivatives are connected through the nitrogen atoms of central heterocyclic rings by a tether of bis-ethoxyethane chain. In the experiment, the researchers used many compounds, for example, Ethyl 4-nitro-1H-pyrrole-2-carboxylate (cas: 5930-92-7SDS of cas: 5930-92-7).

Ethyl 4-nitro-1H-pyrrole-2-carboxylate (cas: 5930-92-7) belongs to esters. Esters typically have a pleasant smell; those of low molecular weight are commonly used as fragrances and are found in essential oils and pheromones. Esters are more polar than ethers but less polar than alcohols. They participate in hydrogen bonds as hydrogen-bond acceptors, but cannot act as hydrogen-bond donors, unlike their parent alcohols. This ability to participate in hydrogen bonding confers some water-solubility.SDS of cas: 5930-92-7

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics