Ethylene glycol-bis(succinic acid N-hydroxysuccinimide ester)

Also known as: EGS, Di(N-succinimidyl) ethylene glycol disuccinate, Ethylene glycol bis(succinimidyl succinate), Ethylene glycol disuccinate di(N-succinimidyl) ester, EGBSS, MFCD00049057, Peg-SS, ethyleneglycol bis(succinimidyl succinate), 1,2-Ethanediyl bis{4-[(2,5-dioxo-1-pyrrolidinyl)oxy]-4-oxobutanoate}, ethane-1,2-diyl bis{4-[(2,5-dioxopyrrolidin-1-yl)oxy]-4-oxobutanoate}, 4-O-(2,5-dioxopyrrolidin-1-yl) 1-O-[2-[4-(2,5-dioxopyrrolidin-1-yl)oxy-4-oxobutanoyl]oxyethyl] butanedioate

Ethylene glycol-bis(succinic acid N-hydroxysuccinimide ester) (CAS 70539-42-3) is a compound in the Solvents category listed in the Jingsj chemical database. It has the molecular formula C18H20N2O12 and a molecular weight of 456.35800 g/mol. Key properties include a boiling point of 603.4ºC at 760 mmHg, a density of 1.52g/cm3 and a flash point of 318.7ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 70539-42-3
Jingsj CID: J-29470-2
Molecular Formula: C₁₈H₂₀N₂O₁₂
Molecular Weight: 456.35800 g/mol
Category: Solvents
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	603.4ºC at 760 mmHg
Density	1.52g/cm3
Flash Point	318.7ºC
Exact Mass	456.10200
PSA	179.96000
Refractive Index	1.56

Activity & Biological Data

Target	Alkyl/ether
Additional Information	[1]. An S, et al. Small-molecule PROTACs: An emerging and promising approach for the development of targeted therapy drugs. EBioMedicine. 2018 Oct;36:553-562

Frequently Asked Questions

What is the CAS number of Ethylene glycol-bis(succinic acid N-hydroxysuccinimide ester)?

The CAS number of Ethylene glycol-bis(succinic acid N-hydroxysuccinimide ester) is 70539-42-3.

What are the molecular formula and molecular weight of Ethylene glycol-bis(succinic acid N-hydroxysuccinimide ester)?

Ethylene glycol-bis(succinic acid N-hydroxysuccinimide ester) has molecular formula C18H20N2O12 and molecular weight 456.35800 g/mol.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated: 8/21/2026

How to cite: Jingsj. "Ethylene glycol-bis(succinic acid N-hydroxysuccinimide ester) (CAS 70539-42-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-29470-2 (accessed 2026-11-06).

Data for reference only; verify product details with suppliers before purchase.