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Peptides

Arg-Arg-Arg

Also known as L-Arginyl-L-arginyl-L-arginine, arginyl-arginyl-arginine, (2S)-2-[[(2S)-2-[[(2S)-2-amino-5-(diaminomethylideneamino)pentanoyl]amino]-5-(diaminomethylideneamino)pentanoyl]amino]-5-(diaminomethylideneamino)pentanoic acid

CAS 26982-20-7Formula C18H38N12O4Molar mass 486.58 g/molEC 689-349-3
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Arg-Arg-Arg chemical structure, C18H38N12O4, CAS 26982-20-7
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
26982-20-7
Formula
C18H38N12O4
Molar mass
486.58 g/mol
EC number
689-349-3
HS code
292529
Category
Peptides

What is Arg-Arg-Arg?

Plain description, key identifiers and synonyms

Arg-Arg-Arg is a tripeptide.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
(2S)-2-[[(2S)-2-[[(2S)-2-amino-5-(diaminomethylideneamino)pentanoyl]amino]-5-(diaminomethylideneamino)pentanoyl]amino]-5-(diaminomethylideneamino)pentanoic acid
CAS number
26982-20-7
EC number
689-349-3
Molecular formula
C18H38N12O4
INCI name
POLYARGININE HCL
InChIKey
XPSGESXVBSQZPL-SRVKXCTJSA-N
InChI
InChI=1S/C18H38N12O4/c19-10(4-1-7-26-16(20)21)13(31)29-11(5-2-8-27-17(22)23)14(32)30-12(15(33)34)6-3-9-28-18(24)25/h10-12H,1-9,19H2,(H,29,31)(H,30,32)(H,33,34)(H4,20,21,26)(H4,22,23,27)(H4,24,25,28)/t10-,11-,12-/m0/s1
Canonical SMILES
NC(N)=NCCCC(N)C(=O)NC(CCCN=C(N)N)C(=O)NC(CCCN=C(N)N)C(=O)O
Isomeric SMILES
C(C[C@@H](C(=O)N[C@@H](CCCN=C(N)N)C(=O)N[C@@H](CCCN=C(N)N)C(=O)O)N)CN=C(N)N

Synonyms

  • L-Arginyl-L-arginyl-L-arginine
  • arginyl-arginyl-arginine
  • (2S)-2-[[(2S)-2-[[(2S)-2-amino-5-(diaminomethylideneamino)pentanoyl]amino]-5-(diaminomethylideneamino)pentanoyl]amino]-5-(diaminomethylideneamino)pentanoic acid
  • (S)-2-((S)-2-((S)-2-Amino-5-guanidinopentanamido)-5-guanidinopentanamido)-5-guanidinopentanoic acid

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
486.58 g/molcalc.
Exact mass
486.3139 Dacalc.
LogP (octanol/water)
-4.47calc.
Topological polar surface area
314.7 Ųcalc.
Hydrogen bond donors
10calc.
Hydrogen bond acceptors
7calc.
Rotatable bonds
17calc.
Heavy atoms
34calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0.67calc.
Formal charge
0calc.
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.

Arg-Arg-Arg suppliers

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Arg-Arg-Arg 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

Cosmetic ingredient, INCI name POLYARGININE HCL(nail conditioning)

Cosmetic functions

  • Nail conditioning

Regulatory status

Inventories, regulations and trade controls that list this substance

Health and food

  • EU cosmetic ingredient inventory

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Arg-Arg-Arg 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 Arg-Arg-Arg is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Arg-Arg-Arg, based on the data on this page

What is Arg-Arg-Arg?

Arg-Arg-Arg is a tripeptide.

What is the CAS number of Arg-Arg-Arg?

The CAS registry number of Arg-Arg-Arg is 26982-20-7.

What is the molecular formula and weight of Arg-Arg-Arg?

The molecular formula of Arg-Arg-Arg is C18H38N12O4 and its molar mass is 486.58 g/mol.

What is Arg-Arg-Arg used for?

Known uses and roles of Arg-Arg-Arg include nail conditioning.

Is Arg-Arg-Arg hazardous?

No GHS hazard classification for Arg-Arg-Arg 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 Arg-Arg-Arg?

Arg-Arg-Arg 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 Arg-Arg-Arg?

Post a free request on CompoundList and suppliers of Arg-Arg-Arg will send you quotes. Your contact details stay private until you accept a quote.

What is the price of Arg-Arg-Arg?

Suppliers quote Arg-Arg-Arg 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

Practical guides that help when you source, ship or handle Arg-Arg-Arg

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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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