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Peptides

Splenopentin

Also known as Arg-lys-glu-val-tyr, Splenin pentapeptide (32-36), Thymopoietin III pentapeptide (32-36)

CAS 75957-60-7Formula C31H51N9O9Molar mass 693.80 g/mol
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Splenopentin chemical structure, C31H51N9O9, CAS 75957-60-7
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
75957-60-7
Formula
C31H51N9O9
Molar mass
693.80 g/mol
HS code
292529
Category
Peptides

What is Splenopentin?

Plain description, key identifiers and synonyms

Arg-Lys-Glu-Val-Tyr is a pentapeptide.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
(4S)-4-[[(2S)-6-amino-2-[[(2S)-2-amino-5-(diaminomethylideneamino)pentanoyl]amino]hexanoyl]amino]-5-[[(2S)-1-[[(1S)-1-carboxy-2-(4-hydroxyphenyl)ethyl]amino]-3-methyl-1-oxobutan-2-yl]amino]-5-oxopentanoic acid
CAS number
75957-60-7 CAS number cross-checked
Molecular formula
C31H51N9O9
InChIKey
DRCNRVYVCHHIJP-AQBORDMYSA-N
InChI
InChI=1S/C31H51N9O9/c1-17(2)25(29(47)39-23(30(48)49)16-18-8-10-19(41)11-9-18)40-28(46)22(12-13-24(42)43)38-27(45)21(7-3-4-14-32)37-26(44)20(33)6-5-15-36-31(34)35/h8-11,17,20-23,25,41H,3-7,12-16,32-33H2,1-2H3,(H,37,44)(H,38,45)(H,39,47)(H,40,46)(H,42,43)(H,48,49)(H4,34,35,36)/t20-,21-,22-,23-,25-/m0/s1
Canonical SMILES
CC(C)C(NC(=O)C(CCC(=O)O)NC(=O)C(CCCCN)NC(=O)C(N)CCCN=C(N)N)C(=O)NC(Cc1ccc(O)cc1)C(=O)O
Isomeric SMILES
CC(C)[C@@H](C(=O)N[C@@H](CC1=CC=C(C=C1)O)C(=O)O)NC(=O)[C@H](CCC(=O)O)NC(=O)[C@H](CCCCN)NC(=O)[C@H](CCCN=C(N)N)N

Synonyms

  • Arg-lys-glu-val-tyr
  • Splenin pentapeptide (32-36)
  • Thymopoietin III pentapeptide (32-36)
  • Splenopentin acetate salt H-Arg-Lys-Glu-Val-Tyr-OH acetate salt
  • Splentin
  • 75957-60-7 (free base)
  • H-RKEVY-OH
  • Splenopentin acetate salt
  • H-Arg-Lys-Glu-Val-Tyr-OH
  • L-Tyrosine, N-(N-(N-(N2-L-arginyl-L-lysyl)-L-alpha-glutamyl)-L-valyl)-
  • N-[11,16-Diamino-8-(4-aminobutyl)-5-(2-carboxyethyl)-1,4,7,10-tetrahydroxy-16-imino-2-(propan-2-yl)-3,6,9,15-tetraazahexadeca-3,6,9-trien-1-ylidene]tyrosine

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
693.80 g/molcalc.
Exact mass
693.381 Dacalc.
LogP (octanol/water)
-2.01calc.
Topological polar surface area
327.7 Ųcalc.
Hydrogen bond donors
11calc.
Hydrogen bond acceptors
10calc.
Rotatable bonds
23calc.
Heavy atoms
49calc.
Rings
1calc.
Aromatic rings
1calc.
Fraction sp3 carbons
0.58calc.
Formal charge
0calc.
Stereocentres
5calc.
Lipinski rule of five
Fails (2 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Murcko scaffold

The ring system that remains when every side chain is removed

Murcko scaffold of this chemical, c1ccccc1

c1ccccc1

1 ring, 6 atoms, the Benzene ring system.

485,677 other chemicals share this scaffold

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.

Splenopentin suppliers

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Splenopentin 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

Applications are not documented for this substance yet. Suppliers often describe uses on their product pages, linked in the suppliers list above.

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 Splenopentin 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 Splenopentin is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Splenopentin, based on the data on this page

What is Splenopentin?

Arg-Lys-Glu-Val-Tyr is a pentapeptide.

What is the CAS number of Splenopentin?

The CAS registry number of Splenopentin is 75957-60-7.

What is the molecular formula and weight of Splenopentin?

The molecular formula of Splenopentin is C31H51N9O9 and its molar mass is 693.80 g/mol.

Is Splenopentin hazardous?

No GHS hazard classification for Splenopentin 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 Splenopentin?

Splenopentin 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 Splenopentin?

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What is the price of Splenopentin?

Suppliers quote Splenopentin 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 Splenopentin

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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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