N-Succinimidyl 6-maleimidohexanoate

Also known as: EMCS, N-(6-Maleimidocaproyloxy)succinimide, N-(epsilon-Maleimidocaproyloxy)succinimide, 6-Maleimidohexanoic acid N-hydroxysuccinimide ester, 6-Maleimidohexanoic acid N-succinimidyl ester, 1-[6-[(2,5-Dioxo-1-pyrrolidinyl)oxy]-6-oxohexyl]-1H-pyrrole-2,5-dione, (2,5-Dioxopyrrolidin-1-yl) 6-(2,5-dioxo-2,5-dihydro-1H-pyrrol-1-yl)hexanoate, N-Succinimidyl 6-maleimidohexanoate [Cross-linking Reagent], MCOSU, MFCD00043043

N-Succinimidyl 6-maleimidohexanoate (CAS 55750-63-5) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C14H16N2O6 and a molecular weight of 308.287 g/mol. Key properties include a melting point of 70-73 °C(lit.), a boiling point of 480.6±47.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 244.5±29.3 °C. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation, H319 — Causes serious eye irritation and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 55750-63-5
Jingsj CID: J-22713-4
Molecular Formula: C₁₄H₁₆N₂O₆
Molecular Weight: 308.287 g/mol
Category: Organic Acids
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	70-73 °C(lit.)
Boiling Point	480.6±47.0 °C at 760 mmHg
Density	1.4±0.1 g/cm3
Flash Point	244.5±29.3 °C
Exact Mass	308.100830
PSA	101.06000
LogP	-0.81
Vapor Pressure	0.0±1.2 mmHg at 25°C
Refractive Index	1.577
Additional Property	chloroform: 100mg/mL

GHS Safety & Compliance

Irritant / Health HazardSignal word: Warning

H315 — Causes skin irritation
H319 — Causes serious eye irritation
H335 — May cause respiratory irritation
H351 — Suspected of causing cancer

Customs & Trade Information

HS Code	2925190090
Summary	2925190090 other imides and their derivatives; salts thereof VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:6.5% General tariff:30.0%

Frequently Asked Questions

What is the CAS number of N-Succinimidyl 6-maleimidohexanoate?

The CAS number of N-Succinimidyl 6-maleimidohexanoate is 55750-63-5.

What are the molecular formula and molecular weight of N-Succinimidyl 6-maleimidohexanoate?

N-Succinimidyl 6-maleimidohexanoate has molecular formula C14H16N2O6 and molecular weight 308.287 g/mol.

Is N-Succinimidyl 6-maleimidohexanoate hazardous?

N-Succinimidyl 6-maleimidohexanoate has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.

What are the upstream and downstream products of N-Succinimidyl 6-maleimidohexanoate?

For N-Succinimidyl 6-maleimidohexanoate, Upstream Products: N,N'-Disuccinimidyl carbonate, 6-Maleimidocaproic acid, Maleic anhydride; Downstream Products: MC-Val-Cit-PAB-OH.

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. "N-Succinimidyl 6-maleimidohexanoate (CAS 55750-63-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-22713-4 (accessed 2026-11-09).

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