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Heterocyclic building blocks

SPDP-PEG8-NHS ester

Also known as LC-PEG8-SPDP, 2,5-dioxopyrrolidin-1-yl 3-oxo-1-(pyridin-2-yldisulfanyl)-7,10,13,16,19,22,25,28-octaoxa-4-azahentriacontan-31-oate, SDPD-PEG8-NHS

CAS 1252257-56-9Formula C31H49N3O13S2Molar mass 735.88 g/mol
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SPDP-PEG8-NHS ester chemical structure, C31H49N3O13S2, CAS 1252257-56-9
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
1252257-56-9
Formula
C31H49N3O13S2
Molar mass
735.88 g/mol
HS code
293339
Category
Heterocyclic building blocks

What is SPDP-PEG8-NHS ester?

Plain description, key identifiers and synonyms

SPDP-PEG8-NHS ester is a chemical substance with the molecular formula C31H49N3O13S2 and a molar mass of 735.88 g/mol. Its CAS registry number is 1252257-56-9. The IUPAC name is (2,5-dioxopyrrolidin-1-yl) 3-[2-[2-[2-[2-[2-[2-[2-[2-[3-(pyridin-2-yldisulfanyl)propanoylamino]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]propanoate.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
(2,5-dioxopyrrolidin-1-yl) 3-[2-[2-[2-[2-[2-[2-[2-[2-[3-(pyridin-2-yldisulfanyl)propanoylamino]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]propanoate
CAS number
1252257-56-9
Molecular formula
C31H49N3O13S2
MDL number
MFCD13185003
InChIKey
HKFFRXQWQMCBEO-UHFFFAOYSA-N
InChI
InChI=1S/C31H49N3O13S2/c35-27(7-26-48-49-28-3-1-2-8-33-28)32-9-11-40-13-15-42-17-19-44-21-23-46-25-24-45-22-20-43-18-16-41-14-12-39-10-6-31(38)47-34-29(36)4-5-30(34)37/h1-3,8H,4-7,9-26H2,(H,32,35)
SMILES (canonical and isomeric)
C1CC(=O)N(C1=O)OC(=O)CCOCCOCCOCCOCCOCCOCCOCCOCCNC(=O)CCSSC2=CC=CC=N2

Synonyms

  • LC-PEG8-SPDP
  • 2,5-dioxopyrrolidin-1-yl 3-oxo-1-(pyridin-2-yldisulfanyl)-7,10,13,16,19,22,25,28-octaoxa-4-azahentriacontan-31-oate
  • SDPD-PEG8-NHS
  • Opss-peg(8)-nhs
  • SPDP-dPEG(R)8-NHS ester
  • Propanoic acid, 3-[[25-oxo-27-(2-pyridinyldithio)-3,6,9,12,15,18,21-heptaoxa-24-azaheptacos-1-yl]oxy]-, 2,5-dioxo-1-pyrrolidinyl ester
  • Diamido-dPEG&reg
  • SPDP-dPEG
  • LC-PEG8-SPDP?
  • Spdp-peg8-nhsester
  • alpha-[3-(o-Pyridyldisulfido)propanoylamido]-omega-succinimidyl ester octa(ethylene glycol)
  • (2,5-dioxopyrrolidin-1-yl) 3-[2-[2-[2-[2-[2-[2-[2-[2-[3-(2-pyridyldisulfanyl)propanoylamino]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]propanoate
  • 2,5-dioxopyrrolidin-1-yl 3-oxo-1-(pyridin-2-yldisulfaneyl)-7,10,13,16,19,22,25,28-octaoxa-4-azahentriacontan-31-oate

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
735.88 g/molcalc.
Exact mass
735.2707 Dacalc.
LogP (octanol/water)
1.46calc.
Topological polar surface area
179.5 Ųcalc.
Hydrogen bond donors
1calc.
Hydrogen bond acceptors
16calc.
Rotatable bonds
33calc.
Heavy atoms
49calc.
Rings
2calc.
Aromatic rings
1calc.
Fraction sp3 carbons
0.71calc.
Formal charge
0calc.
Stereocentres
0calc.
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, O=C(CCSSc1ccccn1)NCCOCCOCCOCCOCCOCCOCCOCCOCCC(=O)ON1C(=O)CCC1=O

O=C(CCSSc1ccccn1)NCCOCCOCCOCCOCCOCCOCCOCCOCCC(=O)ON1C(=O)CCC1=O

2 rings, 49 atoms. This chemical is the scaffold itself.

No other chemical in our database has 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.

SPDP-PEG8-NHS ester suppliers

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Where suppliers are based

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SPDP-PEG8-NHS ester 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

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 SPDP-PEG8-NHS ester is traded under.

HS 2933.39Indicative HS code

Heterocyclic compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure…

World exports in 2024
$9.16B
−17.9% vs 2023, imports $10.6B
2019 to 2024
Top exporters
  1. China21.5%
  2. India * partner reported12.3%
  3. Ireland11.6%
Top importers
  1. Germany14.2%
  2. United States12.8%
  3. Brazil10.1%

* Partner reported figures, a lower bound.

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

The HS code shown for SPDP-PEG8-NHS ester is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about SPDP-PEG8-NHS ester, based on the data on this page

What is SPDP-PEG8-NHS ester?

SPDP-PEG8-NHS ester is a chemical substance with the molecular formula C31H49N3O13S2 and a molar mass of 735.88 g/mol. Its CAS registry number is 1252257-56-9.

What is the CAS number of SPDP-PEG8-NHS ester?

The CAS registry number of SPDP-PEG8-NHS ester is 1252257-56-9.

What is the molecular formula and weight of SPDP-PEG8-NHS ester?

The molecular formula of SPDP-PEG8-NHS ester is C31H49N3O13S2 and its molar mass is 735.88 g/mol.

What is SPDP-PEG8-NHS ester used for?

Known uses and roles of SPDP-PEG8-NHS ester include building blocks in research and laboratory.

Is SPDP-PEG8-NHS ester hazardous?

No GHS hazard classification for SPDP-PEG8-NHS ester 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 SPDP-PEG8-NHS ester?

SPDP-PEG8-NHS ester is usually classified under HS code 293339 (Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy SPDP-PEG8-NHS ester?

CompoundList lists 1 supplier of SPDP-PEG8-NHS ester in United States. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of SPDP-PEG8-NHS ester?

Suppliers quote SPDP-PEG8-NHS ester 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 SPDP-PEG8-NHS ester

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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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