C5H10N2O3

The organic molecular formula C₅H₁₀N₂O₃ (molar mass: ≈ 146.14 g/mol) may refer to:

• Dimethylol ethylene urea: used in textile finishing.^[2]
• Glutamine: a common, proteogenic α-amino acid.^[1]
• Isoglutamine, or α-glutamine: a structural isomer of glutamine where the amide group is situated on a α-carbon instead of a γ-carbon.^[3]
• β-Ureidoisobutyric acid: an intermediate in the catabolism of pyrimidines (thymine/uracil).^[4][5]

1. PubChem. "L-Glutamine". pubchem.ncbi.nlm.nih.gov. Retrieved 2025-10-19.
2. Paul, Roshan (2014-10-20). Functional Finishes for Textiles: Improving Comfort, Performance and Protection. Elsevier. ISBN 978-0-85709-845-0.
3. Li, Xiaojuan; Lin, Cheng; O’Connor, Peter B. (2010-05-01). "Glutamine Deamidation: Differentiation of Glutamic Acid and γ-Glutamic Acid in Peptides by Electron Capture Dissociation". Analytical Chemistry. 82 (9): 3606–3615. doi:10.1021/ac9028467. ISSN 0003-2700. PMC 2872026.
4. Wan, Qin-Li; Meng, Xiao; Fu, Xiaodie; Chen, Bohui; Yang, Jing; Yang, Hengwen; Zhou, Qinghua (2019-06-21). "Intermediate metabolites of the pyrimidine metabolism pathway extend the lifespan of C. elegans through regulating reproductive signals". Aging. 11 (12): 3993–4010. doi:10.18632/aging.102033. ISSN 1945-4589. PMC 6629003. PMID 31232697.
5. "beta-Ureidopropionase deficiency: an inborn error of pyrimidine degradation associated with neurological abnormalities | ResearchGate". www.researchgate.net. Archived from the original on 2011-11-08. Retrieved 2025-10-19.

Related molecular formulas
	C5H12N2O3
C4H8N2O3	C5H10N2O3	C6H12N2O3
	C5H8N2O3
C5H10N2O2		C5H10N2O4
C5H9NO3		C5H11N3O3

The chemical structure of the amino acid, Glutamine which is one of the 20 standard proteogenic amino acids (protein building blocks).^[1] The two carbonyl groups (C=O) showcase the two degrees of unsaturation.