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Cat. No.: HY-N16308

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ER-Laurdan

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ER-Laurdan is a derivative of the membrane-permeable fluorescent probe Laurdan (HY-D0080) that targets the endoplasmic reticulum (ER). As a membrane fluidity reporter, ER-Laurdan specifically localizes to the ER luminal membrane, and exhibits a prominent solvatochromic response to fluidity changes caused by membrane packing and exogenous saturated fatty acid stress. ER-Laurdan shows no overlapping localization with mitochondria, enables quantitative analysis of ER membrane fluidity via generalized polarization ratio measurement, and allows automatic signal masking with the help of ER markers. With high specificity and quantitative capability, ER-Laurdan serves as an important tool for investigating metabolic disorders and associated changes in the physical properties of cell membranes.

For research use only. We do not sell to patients.

CAS No.: 3091879-77-2
Formula: C₅₄H₈₀F₅N₃O₁₃
Molecular Weight:1074.22

Storage:

-20°C, protect from light

* In solvent : -80°C, 6 months; -20°C, 1 month (protect from light)

ER-Laurdan Chemical Structure

CAS No.: 3091879-77-2

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Top Publications Citing

Use of MCE Products

Fluorescent Dye

Strong Fluorescence Signal / Multi-Disciplinary Applications / High Fluorescence Specificity

Biological Activity
- Description
- In Vitro
Chemical Information
Purity & Documentation
References
Calculators
Help & FAQs
Classifications
Bioz

Biological Activity

Description

In Vitro

ER-Laurdan (5 μM; 20 min) localizes specifically to the endoplasmic reticulum (ER) in HeLa cells, with high colocalization with the ER marker ER-Tracker Red^[1].
ER-Laurdan (5 μM; 20 min) detects reduced ER membrane fluidity (increased GP) in HeLa cells treated with 200 μM PA (24-48 h), while lower PA concentrations do not induce significant changes^[1].

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

Immunofluorescence^[1]

Cell Line:

HeLa cells
Concentration:

5 μM
Incubation Time:

20 min
Result:

Showed high signal overlap with ER-Tracker Red, with a Pearson’s correlation coefficient of 0.94.
Specifically stained ER tubules with no overlap with neighboring mitochondria.

Chemical Information

CAS No. 3091879-77-2
Appearance Solid
Molecular Weight 1074.22
Formula C₅₄H₈₀F₅N₃O₁₃
Color White to light yellow
SMILES

O=C(C1=C(F)C(F)=C(F)C(F)=C1F)NCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCNC(CN(C)C2=CC=C3C(C=CC(C(CCCCCCCCCCC)=O)=C3)=C2)=O
Structure Classification
- Lipids
Shipping

Room temperature in continental US; may vary elsewhere.
Storage

-20°C, protect from light

* In solvent : -80°C, 6 months; -20°C, 1 month (protect from light)

Purity & Documentation

Select Batch:

Purity: 99.98%

Assay: 99.98%

ee.: 99.98%

Data Sheet (266 KB)
SDS (252 KB)
- English - EN (252 KB)
- Français - FR (252 KB)
- Deutsch - DE (252 KB)
- Norwegian - NO (252 KB)
- Español - ES (252 KB)
- Swedish - SV (252 KB)
- Italian - IT (252 KB)
- Korean - KR (252 KB)
- Portuguese - PT (252 KB)
COA (2659 KB)
Elemental Analysis Report (2659 KB)
HNMR (2659 KB)
CNMR (2659 KB)
RP-HPLC (2659 KB)
NP-HPLC (2659 KB)
MS (2659 KB)
LCMS (2659 KB)
IR (2659 KB)
GC (2659 KB)
OR (2659 KB)
SDS-PAGE (2659 KB)
SEC-HPLC (2659 KB)
Other Report (2659 KB)
Handling Instructions (2659 KB)

References

[1]. Wong AM, et al. Organelle-Targeted Laurdans Measure Heterogeneity in Subcellular Membranes and Their Responses to Saturated Lipid Stress. ACS Chem Biol. 2024;19(8):1773-1785. [Content Brief]

[2]. Tsai Y T, et al. 1-Deoxysphingolipids dysregulate membrane properties and cargo trafficking in the early secretory pathway[J]. Cell chemical biology, 2026, 33(1): 45-58. e8.

Calculators

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Help & FAQs

How should lyophilized recombinant proteins be reconstituted and stored?

1. Before opening the cap, centrifuge the vial at 13000 rpm for 20-30 seconds. This step will ensure that any lyophilized powder that may have adhered to the cap or walls is collected at the bottom of the vial, minimizing the risk of product loss.

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100 mg

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