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N-Pyrrolidino Metonitazene (citrate)

Item No. 37685

Restricted Product (Schedule I)
Product Insert (PDF)GC-MS (PDF)Safety Data Sheet (SDS) (PDF)
Synonyms
Synonyms
  • Metonitazepyne
Technical Information
Formal Name
2-(4-methoxybenzyl)-5-nitro-1-(2-(pyrrolidin-1-yl)ethyl)-1H-benzo[d]imidazole, 2-hydroxy-1,2,3-propanetricarboxylate
Molecular Formula
C21H24N4O3 • C6H8O7
Formula Weight
572.6
Purity
≥98%
Formulation
A crystalline solid
Solubility(Learn about Variance in Solubility)
DMF: 3 mg/mlDMSO: 3 mg/ml
λmax
243 nm
SMILES
COC(C=C1)=CC=C1CC2=NC3=CC([N+]([O-])=O)=CC=C3N2CCN4CCCC4.OC(CC(O)=O)(C(O)=O)CC(O)=O
InChi Code
InChI=1S/C21H24N4O3.C6H8O7/c1-28-18-7-4-16(5-8-18)14-21-22-19-15-17(25(26)27)6-9-20(19)24(21)13-12-23-10-2-3-11-23;7-3(8)1-6(13,5(11)12)2-4(9)10/h4-9,15H,2-3,10-14H2,1H3;13H,1-2H2,(H,7,8)(H,9,10)(H,11,12)
InChi Key
AIPDICOXJFKNKF-UHFFFAOYSA-N
Regulatory Information
DEA Schedule
I
Shipping & Storage Information
Storage
-20°C
Shipping
Room temperature in continental US; may vary elsewhere
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    1 mg

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    Product Description

    N-Pyrrolidino metonitazene (citrate) (Item No. 37685) is an analytical reference standard categorized as an opioid.1 N-Pyrrolidino metonitazene is regulated as a Schedule I compound in the United States. This product is intended for research and forensic applications.

    WARNING This product is not for human or veterinary use.

    References & Product Citations
    Product Description References

    1. Kozell, L.B., Eshelman, A., J., Wolfrum, K.M., et al. Pharmacologic characterization of substituted nitazenes at μ, κ, and Δ opioid receptors suggests high potential for toxicity. J. Pharmacol. Exp. Ther. 389(2), 219-228 (2024).

    Product Citations

    Sapkota, R., Lomnicki, E.E., and Subedi, B. Nitazenes discharged during Super Bowl and Mardi Gras celebrations in New Orleans, USA. Environ. Sci. Tech. Lett. (2026).

    Truver, M.T., Roman, M., Gomonit, M.M., et al. Fatal intoxications with nitazenes: Postmortem findings, toxicology, and in vitro characterization at the μ-opioid receptor of six nitazene analogues. Arch. Toxicol. (2026).

    Hardwick, E.K., and Davidson, J.T. Structural characterization of nitazene analogs using electrospray ionization-tandem mass spectrometry (ESI-MS/MS). Drug Test Anal. (2025).

    Berardinelli, D., Taoussi, O., Ovat, D.Y., et al. Human metabolism and pharmacological profiling of protonitazepyne and metonitazepyne, two highly potent nitazenes: prediction of main metabolite activity based on µ-opioid receptor docking simulations. Arch. Toxicol. (2025).

    Kozell, L.B., Eshelman, A., J., Wolfrum, K.M., et al. Pharmacologic characterization of substituted nitazenes at μ, κ, and Δ opioid receptors suggests high potential for toxicity. J. Pharmacol. Exp. Ther. 389(2), 219-228 (2024).