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Ro 1-7683, N-Ethyl-2-phenyl-N-(4-pyridylmethyl)hydracrylamide
Empirical Formula (Hill Notation):
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Quality Level






45% (w/v) aq 2-hydroxypropyl-β-cyclodextrin: 4.3 mg/mL
ethanol: 5.6 mg/mL
H2O: insoluble

storage temp.


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Gene Information

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Tropicamide has been used for studying the regulation of fragile X behavior in male mice. 1% tropicamide has also been used for dilating mice pupils.

Biochem/physiol Actions

M4 muscarinic acetylcholine receptor antagonist.

Features and Benefits

This compound is a featured product for Neuroscience research. Click here to discover more featured Neuroscience products. Learn more about bioactive small molecules for other areas of research at
This compound is featured on the Acetylcholine Receptors (Muscarinic) page of the Handbook of Receptor Classification and Signal Transduction. To browse other handbook pages, click here.


Bottomless glass bottle. Contents are inside inserted fused cone.

Preparation Note

Tropicamide is soluble in 45% (w/v) aqueous 2-hydroxypropyl-beta-cyclodextrin (4.3 mg/mL) and ethanol (5.6 mg/mL).

Other Notes

Tandem Mass Spectrometry data independently generated by Scripps Center for Metabolomics is available to view or download in PDF. T9778.pdf Tested metabolites are featured on Scripps Center for Metabolomics METLIN Metabolite Database. To learn more, visit


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Hazard Classifications

Acute Tox. 4 Dermal - Acute Tox. 4 Inhalation - Acute Tox. 4 Oral - Eye Irrit. 2 - Skin Irrit. 2 - Skin Sens. 1 - STOT SE 3

Target Organs

Respiratory system

Storage Class Code

11 - Combustible Solids



Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis

Certificate of Origin

Shanu Markand et al.
Investigative ophthalmology & visual science, 56(4), 2684-2695 (2015-03-15)
Methylenetetrahydrofolate reductase (Mthfr) is a key enzyme in homocysteine-methionine metabolism. We investigated Mthfr expression in retina and asked whether mild hyperhomocysteinemia, due to Mthfr deficiency, alters retinal neurovascular structure and function. Expression of Mthfr was investigated at the gene and
Raghavan Lavanya et al.
Ophthalmology, 119(3), 474-480 (2011-11-29)
To evaluate the risk of primary acute angle closure (AAC), changes in intraocular pressure (IOP), and associated risk factors after pupil dilation in Asian subjects with narrow angles (primary angle-closure suspects [PACS]). Prospective clinical study. A total of 471 subjects
Surabi Veeraragavan et al.
Behavioral neuroscience, 125(5), 783-790 (2011-09-29)
Muscarinic acetylcholine receptors (mAChR) are G protein-coupled receptors (M1-M5), grouped together into two functional classes, based on their G protein interaction. Although ubiquitously expressed in the CNS, the M4 protein shows highest expression in the neostriatum, cortex, and hippocampus. Electrophysiological
Tin A Tun et al.
Investigative ophthalmology & visual science, 56(5), 3337-3344 (2015-05-30)
To characterize an optical coherence tomography (OCT)-derived parameter, Bruch's membrane opening-minimum rim width (BMO-MRW), and its association with demographic and clinical parameters in normal Chinese subjects. Right eyes of 466 consecutive healthy subjects from a population-based study of Singaporean Chinese
Kyoungmin Park et al.
The American journal of pathology, 178(2), 688-698 (2011-02-02)
Pigment epithelium-derived factor (PEDF) is a serine proteinase inhibitor with antiangiogenic activities. To investigate whether PEDF overexpression has an impact on ocular neovascularization in vivo, we generated PEDF transgenic (PEDF-Tg) mice that ubiquitously express human PEDF driven by the β-actin

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