Date published: 2025-11-22

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NOB (CAS 55894-52-5)

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Alternate Names:
4-Nitro-3-(octanoyloxy)benzoic acid
CAS Number:
55894-52-5
Purity:
≥98%
Molecular Weight:
309.30
Molecular Formula:
C15H19NO6
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.
* Refer to Certificate of Analysis for lot specific data.

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NOB (CAS 55894-52-5), also known as 4-Nitro-3-(octanoyloxy)benzoic acid, serves as a chromogenic substrate specifically designed for phospholipases like PLA2 that are derived from snake venoms and human serum. Its absorbance can be measured at 425 nm. It demonstrates solubility in DMSO (>25mg/ml) or 100% ethanol (>25mg/ml). Extensive research has focused on examining the potential biochemical and physiological effects of NOB, revealing inhibitory properties against the growth of certain bacteria and fungi, as well as its ability to hinder the activity of the enzyme cyclooxygenase. Moreover, it exhibits anti-inflammatory and antioxidant properties. Notably, this compound has also been investigated for its potential to lower cholesterol levels and function as an anti-cancer agent.


NOB (CAS 55894-52-5) References

  1. A simple assay for a human serum phospholipase A2 that is associated with high-density lipoproteins.  |  Petrovic, N., et al. 2001. J Lipid Res. 42: 1706-13. PMID: 11590228
  2. Enzymatic and structural characterization of new PLA2 isoform isolated from white venom of Crotalus durissus ruruima.  |  Diz Filho, EB., et al. 2009. Toxicon. 53: 104-14. PMID: 19013478
  3. Effect of the synthetic coumarin, ethyl 2-oxo-2H-chromene-3-carboxylate, on activity of Crotalus durissus ruruima sPLA2 as well as on edema and platelet aggregation induced by this factor.  |  Fonseca, FV., et al. 2010. Toxicon. 55: 1527-30. PMID: 20223257
  4. Quercetin as an inhibitor of snake venom secretory phospholipase A2.  |  Cotrim, CA., et al. 2011. Chem Biol Interact. 189: 9-16. PMID: 21056032
  5. Harpalycin 2 inhibits the enzymatic and platelet aggregation activities of PrTX-III, a D49 phospholipase A2 from Bothrops pirajai venom.  |  Ximenes, RM., et al. 2012. BMC Complement Altern Med. 12: 139. PMID: 22925825
  6. Acute toxicity of vipoxin and its components: is the acidic component an 'inhibitor' of PLA2 toxicity?  |  Atanasov, VN., et al. 2012. Interdiscip Toxicol. 5: 169-72. PMID: 23554559
  7. Partial Characterization of Venom from the Colombian Spider Phoneutria Boliviensis (Aranae:Ctenidae).  |  Estrada-Gomez, S., et al. 2015. Toxins (Basel). 7: 2872-87. PMID: 26264023
  8. Venom from Opisthacanthus elatus scorpion of Colombia, could be more hemolytic and less neurotoxic than thought.  |  Estrada-Gómez, S., et al. 2016. Acta Trop. 153: 70-8. PMID: 26477848
  9. Isolation and Functional Characterization of an Acidic Myotoxic Phospholipase A₂ from Colombian Bothrops asper Venom.  |  Posada Arias, S., et al. 2017. Toxins (Basel). 9: PMID: 29072602
  10. Insights into the candidacidal mechanism of Ctn[15-34] - a carboxyl-terminal, crotalicidin-derived peptide related to cathelicidins.  |  Cavalcante, CSP., et al. 2018. J Med Microbiol. 67: 129-138. PMID: 29214974
  11. Prospective study of a Bothrops jararacussu venom batch (Bj2015) - phospholipase A2 activity, immunogenicity, neurotoxicity, and myotoxicity parameters.  |  Oliveira, ICF., et al. 2019. Nat Prod Res. 33: 2417-2421. PMID: 29495880
  12. Neutralizing properties of LY315920 toward snake venom group I and II myotoxic phospholipases A2.  |  Bryan-Quirós, W., et al. 2019. Toxicon. 157: 1-7. PMID: 30447275
  13. Distinctive Distribution of Secretory Phospholipases A₂ in the Venoms of Afro-Asian Cobras (Subgenus: Naja, Afronaja, Boulengerina and Uraeus).  |  Tan, CH., et al. 2019. Toxins (Basel). 11: PMID: 30769779
  14. Isolation of two basic phospholipases A2 from Bothrops diporus snake venom: Comparative characterization and synergism between Asp49 and Lys49 variants.  |  Bustillo, S., et al. 2019. Toxicon. 168: 113-121. PMID: 31326508
  15. Structural, enzymatic and pharmacological profiles of AplTX-II - A basic sPLA2 (D49) isolated from the Agkistrodon piscivorus leucostoma snake venom.  |  Resende, LM., et al. 2021. Int J Biol Macromol. 175: 572-585. PMID: 33529631

Ordering Information

Product NameCatalog #UNITPriceQtyFAVORITES

NOB, 50 mg

sc-471095
50 mg
$163.00

NOB, 250 mg

sc-471095A
250 mg
$469.00