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Leupeptin cation

Also known as leupeptin(1+), N-acetyl-L-leucyl-N-[(2S)-5-{[amino(iminio)methyl]amino}-1-oxopentan-2-yl]-L-leucinamide, Acetyl-Leu-Leu-Arg-al, Leupeptin hemisulfate salt, N-Acetyl-L-leucyl-L-leucyl-L-argininal hemisulfate salt

Formula C20H39N6O4+Molar mass 427.57 g/mol
1 supplier listed
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Leupeptin cation chemical structure, C20H39N6O4+
2D chemical structure

Key facts

What buyers check first

All properties
Formula
C20H39N6O4+
Molar mass
427.57 g/mol
HS code
292529
Category
Peptides

What is Leupeptin cation?

Plain description, key identifiers and synonyms

Leupeptin(1+) is a guanidinium ion that is the conjugate acid of leupeptin, arising from protonation of the guanidino group, major species at pH 7.3. It is a conjugate acid of a leupeptin.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
[(4S)-4-[[(2S)-2-[[(2S)-2-acetamido-4-methylpentanoyl]amino]-4-methylpentanoyl]amino]-5-oxopentyl]-(diaminomethylidene)azanium
Molecular formula
C20H39N6O4+
InChIKey
GDBQQVLCIARPGH-ULQDDVLXSA-O
InChI
InChI=1S/C20H38N6O4/c1-12(2)9-16(24-14(5)28)19(30)26-17(10-13(3)4)18(29)25-15(11-27)7-6-8-23-20(21)22/h11-13,15-17H,6-10H2,1-5H3,(H,24,28)(H,25,29)(H,26,30)(H4,21,22,23)/p+1/t15-,16-,17-/m0/s1
Canonical SMILES
CC(=O)NC(CC(C)C)C(=O)NC(CC(C)C)C(=O)NC(C=O)CCC[NH+]=C(N)N
Isomeric SMILES
CC(C)C[C@@H](C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](CCC[NH+]=C(N)N)C=O)NC(=O)C

Synonyms

  • leupeptin(1+)
  • N-acetyl-L-leucyl-N-[(2S)-5-{[amino(iminio)methyl]amino}-1-oxopentan-2-yl]-L-leucinamide
  • Acetyl-Leu-Leu-Arg-al, Leupeptin hemisulfate salt, N-Acetyl-L-leucyl-L-leucyl-L-argininal hemisulfate salt

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

No measured properties are recorded for this substance yet. Ask suppliers for a technical data sheet.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
427.57 g/molcalc.
Exact mass
427.3027 Dacalc.
LogP (octanol/water)
-2.11calc.
Topological polar surface area
170.4 Ųcalc.
Hydrogen bond donors
6calc.
Hydrogen bond acceptors
4calc.
Rotatable bonds
14calc.
Heavy atoms
30calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0.75calc.
Formal charge
1calc.
Stereocentres
3calc.
Lipinski rule of five
Passes (1 violation)calc.

Calculated for screening. Confirm critical figures with the supplier.

Safety and hazards

GHS classification summary, not a safety data sheet

No GHS hazard classification is recorded for this substance yet. That does not mean it is harmless.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Leupeptin cation suppliers

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  • Hello Bio
    United Kingdom, AvonmouthUnclaimed profile
    Leupeptin cationGrade, purity and minimum order on request
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Where suppliers are based

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Leupeptin cation price

Indicative price range per kg from live supplier offers

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Uses and applications

What the substance is used for, by industry and function

Roles

  • bacterial metabolite
  • calpain inhibitor
  • cathepsin B inhibitor
  • cysteine protease inhibitor
  • enzyme inhibitor
  • metabolite
  • prokaryotic metabolite
  • protease inhibitor
  • serine protease inhibitor

Regulatory status

Inventories, regulations and trade controls that list this substance

No regulatory list memberships are recorded for this substance yet. Always check the rules of the importing and exporting country before trade.

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Leupeptin cation is traded under.

HS 2925.29Indicative HS code

Imines and their derivatives, salts thereof, other

World exports in 2024
$1.8B
+12.4% vs 2023, imports $1.84B
2019 to 2024
Top exporters
  1. China35.9%
  2. France * partner reported15.5%
  3. Germany9.1%
Top importers
  1. United States13.3%
  2. China13.0%
  3. Brazil9.7%

* Partner reported figures, a lower bound.

Reported customs values in USD, not prices.Full trade data

The HS code shown for Leupeptin cation is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Leupeptin cation, based on the data on this page

What is Leupeptin cation?

Leupeptin(1+) is a guanidinium ion that is the conjugate acid of leupeptin, arising from protonation of the guanidino group, major species at pH 7.3. It is a conjugate acid of a leupeptin.

What is the molecular formula and weight of Leupeptin cation?

The molecular formula of Leupeptin cation is C20H39N6O4+ and its molar mass is 427.57 g/mol.

What is Leupeptin cation used for?

Known uses and roles of Leupeptin cation include bacterial metabolite, calpain inhibitor, cathepsin b inhibitor, cysteine protease inhibitor, enzyme inhibitor and 4 more.

Is Leupeptin cation hazardous?

No GHS hazard classification for Leupeptin cation is recorded on CompoundList yet. That does not prove it is safe. Always read the supplier safety data sheet.

What is the HS code of Leupeptin cation?

Leupeptin cation is usually classified under HS code 292529 (Imines and their derivatives, salts thereof, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Leupeptin cation?

CompoundList lists 1 supplier of Leupeptin cation in United Kingdom. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of Leupeptin cation?

Suppliers quote Leupeptin cation on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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