elastase substrate

N-Succinyl-tri-L-alanine 4-nitroanilide, N-Succinyl-L-alanyl-L-alanyl-L-alanine 4-nitroanilide
Empirical Formula (Hill Notation):
CAS Number:
Molecular Weight:
Beilstein/REAXYS Number:
EC Number:
MDL number:
PubChem Substance ID:
Pricing and availability is not currently available.

Quality Level


≥98% (HPLC)




DMF: 25 mg/mL, clear, colorless to light yellow

storage temp.


SMILES string




InChI key


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General description

N-Succinyl-Ala-Ala-Ala-p-nitroanilide is a chromogenic substrate for chymotrypsin-like serine protease, pancreatic elastase and serine endopeptidase.


N-Succinyl-Ala-Ala-Ala-p-nitroanilide has been used as a substrate
  • for screening elastase activity in lyophilized earthworm fibrinolytic enzymes
  • for quantifying elastase activity in sheep milk
  • in screening honeybee inhibitors in serine protease inhibition assay


5 mg in glass bottle
25, 100, 500 mg in poly bottle


Elastase substrate.

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves


NONH for all modes of transport

WGK Germany


Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

M Ogawa et al.
Research communications in chemical pathology and pharmacology, 55(2), 271-274 (1987-02-01)
A human urinary trypsin inhibitor preparation, MR-20, strongly inhibited granulocyte elastase activity. The concentration of MR-20 causing 50% inhibition of the hydrolysis of Suc(Ala) 3pNA by granulocyte elastase was estimated to be 6.4 X 10(-8) M (11 U/ml).
Ping Liu et al.
International journal of molecular medicine, 43(2), 771-778 (2018-12-21)
Spirulina, an edible blue‑green alga, has great potential for various applications in human health, possibly including reduced skin aging. The mechanisms by which spirulina crude protein (SPCP) may influence human skin fibroblast viability are not yet understood; therefore, a human...
Vinu S Siva et al.
Fish & shellfish immunology, 59, 1-8 (2016-11-05)
Serine protease inhibitors (SPIs) play a crucial role in regulation of both host and bacterial serine protease. They are classified into several protein families, where Kazal-type inhibitors are one of families with multi-domain. In the present study, the polymorphism of...
Hu Wan et al.
Comparative biochemistry and physiology. Part B, Biochemistry & molecular biology, 165(1), 36-41 (2013-03-19)
Spider-derived Kunitz-type serine protease inhibitors have been shown to exhibit plasmin and elastase inhibition activity and potassium channel blocking activity, but thus far, no additional roles for spider-derived chymotrypsin inhibitors have been elucidated. In this study, a spider (Araneus ventricosus)...
Transgenic chickpea expressing a recombinant human a1-proteinase inhibitor (a1-PI) driven by a seed-specific promoters from the common bean Phaseolus vulgaris (L.).
Mishra, S., Jha, S., Singh, R., Chaudhary, S., Sanyal, I., & Amla, D. V.
Plant Cell, Tissue and Organ Culture, 115, 23-33 (2013)
Enzyme Explorer Product Application Index for Elastase. Leukocyte elastase is a 29KDa serine endoprotease of the Proteinase S1 Family. It exists as a single 238 amino acid-peptide chain with four disulfide bonds.
Read More
Enzymatic Assay of Elastase (EC, a continuous spectrophotometric rate determination.
Read More

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