CompoundList

Ppack

Also known as D-Phe-pro-arg-chloromethyl ketone, D-Phe-Pro-Arg-Chloromethylketone, (2S)-1-[(2R)-2-amino-3-phenylpropanoyl]-N-[(3S)-1-chloro-6-(diaminomethylideneamino)-2-oxohexan-3-yl]pyrrolidine-2-carboxamide

CAS 71142-71-7Formula C21H31ClN6O3Molar mass 450.97 g/mol
Ppack chemical structure, C21H31ClN6O3, CAS 71142-71-7
2D chemical structure

Key facts

What buyers check first

CAS number
71142-71-7
Formula
C21H31ClN6O3
Molar mass
450.97 g/mol
HS code
293399
Category
Peptides

What is Ppack?

Plain description, key identifiers and synonyms

Ppack is a chemical substance with the molecular formula C21H31ClN6O3 and a molar mass of 450.97 g/mol. Its CAS registry number is 71142-71-7. The IUPAC name is (2S)-1-[(2R)-2-amino-3-phenylpropanoyl]-N-[(3S)-1-chloro-6-(diaminomethylideneamino)-2-oxohexan-3-yl]pyrrolidine-2-carboxamide.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
(2S)-1-[(2R)-2-amino-3-phenylpropanoyl]-N-[(3S)-1-chloro-6-(diaminomethylideneamino)-2-oxohexan-3-yl]pyrrolidine-2-carboxamide
CAS number
71142-71-7
Molecular formula
C21H31ClN6O3
UNII
N62UL02WW4
InChIKey
KWPACVJPAFGBEQ-IKGGRYGDSA-N
InChI
InChI=1S/C21H31ClN6O3/c22-13-18(29)16(8-4-10-26-21(24)25)27-19(30)17-9-5-11-28(17)20(31)15(23)12-14-6-2-1-3-7-14/h1-3,6-7,15-17H,4-5,8-13,23H2,(H,27,30)(H4,24,25,26)/t15-,16+,17+/m1/s1
Canonical SMILES
NC(N)=NCCCC(NC(=O)C1CCCN1C(=O)C(N)Cc1ccccc1)C(=O)CCl
Isomeric SMILES
C1C[C@H](N(C1)C(=O)[C@@H](CC2=CC=CC=C2)N)C(=O)N[C@@H](CCCN=C(N)N)C(=O)CCl

Synonyms

  • D-Phe-pro-arg-chloromethyl ketone
  • D-Phe-Pro-Arg-Chloromethylketone
  • (2S)-1-[(2R)-2-amino-3-phenylpropanoyl]-N-[(3S)-1-chloro-6-(diaminomethylideneamino)-2-oxohexan-3-yl]pyrrolidine-2-carboxamide
  • (S)-1-(D-phenylalanyl)-N-((S)-1-chloro-6-guanidino-2-oxohexan-3-yl)pyrrolidine-2-carboxamide
  • D-Phe-Pro-Arg-CMK
  • H-D-Phe-Pro-Arg-chloromethylketone
  • D-FPR-CMK
  • D-Phe-pro-arg CH2Cl
  • Phe-pro-arg-methyl chloride
  • D-Phe-Pro-ArgCH2Cl
  • Phenylalanyl-prolyl-arginine methyl chloride
  • D-Phenylalanine-proline-arginine methyl chloride
  • C21H31ClN6O3
  • Phe-Pro-Arg-Chloromethylketone
  • L-Prolinamide, D-phenylalanyl-N-(4-((aminoiminomethyl)amino)-1-(chloroacetyl)butyl)-, (S)-
  • d-Phe-Pro-Arg chloromethylketone (PPACK)
  • d-phenylalanyl-prolyl-arginyl chloromethane
  • d-phenylalanyl-prolyl-arginyl chloromethyl ketone
  • D-phenylalanyl-prolyl-arginine chloromethyl ketone
  • (2S)-1-[(2R)-2-amino-3-phenyl-propanoyl]-N-[(1S)-1-(2-chloroacetyl)-4-guanidino-butyl]pyrrolidine-2-carboxamide
  • (S)-1-((R)-2-Amino-3-phenyl-propionyl)-pyrrolidine-2-carboxylic acid [(S)-1-(2-chloro-acetyl)-4-guanidino-butyl]-amide
  • (S)-1-((R)-2-amino-3-phenylpropanoyl)-N-((S)-1-chloro-6-guanidino-2-oxohexan-3-yl)pyrrolidine-2-carboxamide
  • L-Prolinamide, D-phenylalanyl-N-((1S)-4-((aminoiminomethyl)amino)-1-(2-chloroacetyl)butyl)-

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
450.97 g/molcalc.
Exact mass
450.2146 Dacalc.
LogP (octanol/water)
-0.11calc.
Topological polar surface area
156.9 Ųcalc.
Hydrogen bond donors
4calc.
Hydrogen bond acceptors
5calc.
Rotatable bonds
11calc.
Heavy atoms
31calc.
Rings
2calc.
Aromatic rings
1calc.
Fraction sp3 carbons
0.52calc.
Formal charge
0calc.
Stereocentres
3calc.
Lipinski rule of five
Passes (0 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, O=C(CCc1ccccc1)N1CCCC1

O=C(CCc1ccccc1)N1CCCC1

2 rings, 15 atoms, the 3-Phenyl-1-(pyrrolidin-1-yl)propan-1-one ring system.

215 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.

Ppack suppliers

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Ppack price

Indicative price range per kg from live supplier offers

No published prices right now

Suppliers quote this chemical on request. Send one free request and compare quotes side by side.

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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 Ppack is traded under.

HS 2933.99Indicative HS code

Heterocyclic compounds with nitrogen hetero-atom(s) only, other

World exports in 2024
$12.1B
−31.0% vs 2023, imports $28.8B
2019 to 2024
Top exporters
  1. China30.5%
  2. India * partner reported16.3%
  3. Ireland9.0%
Top importers
  1. Slovenia31.7%
  2. Italy24.2%
  3. United States5.0%

* Partner reported figures, a lower bound.

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

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

Frequently asked questions

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

What is Ppack?

Ppack is a chemical substance with the molecular formula C21H31ClN6O3 and a molar mass of 450.97 g/mol. Its CAS registry number is 71142-71-7. The IUPAC name is (2S)-1-[(2R)-2-amino-3-phenylpropanoyl]-N-[(3S)-1-chloro-6-(diaminomethylideneamino)-2-oxohexan-3-yl]pyrrolidine-2-carboxamide.

What is the CAS number of Ppack?

The CAS registry number of Ppack is 71142-71-7.

What is the molecular formula and weight of Ppack?

The molecular formula of Ppack is C21H31ClN6O3 and its molar mass is 450.97 g/mol.

Is Ppack hazardous?

No GHS hazard classification for Ppack 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 Ppack?

Ppack is usually classified under HS code 293399 (Heterocyclic compounds with nitrogen hetero-atom(s) only, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Ppack?

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What is the price of Ppack?

Suppliers quote Ppack 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 Ppack

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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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