Name: Atropine sulfate monohydrate
Brand: Selleck Chemicals
SKU: S2130
Availability: InStock
Rating: 5 (2 reviews)

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Quality Control

Batch: Purity: 99.78%

99.78

Related Targets	Adrenergic Receptor AChR 5-HT Receptor COX Calcium Channel Histamine Receptor Dopamine Receptor GABA Receptor TRP Channel Cholinesterase (ChE)
Other ADC Cytotoxin Inhibitors	Triptolide SN-38 Luteolin (+)-Bicuculline Rutin Artemisinin BHQ Pinocembrin Luteoloside Psoralen

Solubility

In vitro
Batch:

DMSO : 139 mg/mL (200.04 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO.)

Water : 139 mg/mL

Ethanol : 139 mg/mL

Molarity Calculator

Mass	Concentration	Volume	Molecular Weight
Mass value Mass unit	Concentration value Concentration unit	Volume value Volume unit	Molecular weight (g/mol)

Dilution Calculator Molecular Weight Calculator

In vivo batch selection In vivo Batch:
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.
Clear solution	5%DMSO 1 40%PEG300 2 5%Tween80 3 50%ddH2O Validated by Selleck labs. Should you need adjustments to this formulation, contact our sales team for custom testing.	5mg/ml (7.20mM)	Taking the 1 mL working solution as an example, add 50 μL of 100 mg/ml clarified DMSO stock solution to 400 μL of PEG300, mix evenly to clarify it; add 50 μL of Tween80 to the above system, mix evenly to clarify; then continue to add 500 μL of ddH2O to adjust the volume to 1 mL. The mixed solution should be used immediately for optimal results.
Clear solution	5% DMSO 1 95% Corn oil Validated by Selleck labs. Should you need adjustments to this formulation, contact our sales team for custom testing.	0.71mg/ml (1.02mM)	Taking the 1 mL working solution as an example, add 50 μL of 14.2 mg/ml clear DMSO stock solution to 950 μL of corn oil and mix evenly. The mixed solution should be used immediately for optimal results.
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.

In vivo Formulation Calculator (Clear solution)

Step 1: Enter information below (Recommended: An additional animal making an allowance for loss during the experiment)

Dosage: mg/kg

Average weight of animals: g

Dosing volume per animal: μL

Number of animals:

Step 2: Enter the in vivo formulation (This is only the calculator, not formulation. Please contact us first if there is no in vivo formulation at the solubility Section.)

% DMSO

%

% Tween 80

% ddH₂O

% DMSO

+

%

Calculation results:

Working concentration: mg/ml;

Method for preparing DMSO master liquid: mg drug pre-dissolved in μL DMSO ( Master liquid concentration mg/mL, Please contact us first if the concentration exceeds the DMSO solubility of the batch of drug. )

Method for preparing in vivo formulation: Take μL DMSO master liquid, next addμL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH₂O, mix and clarify.

Method for preparing in vivo formulation: Take μL DMSO master liquid, next add μL Corn oil, mix and clarify.

Note: 1. Please make sure the liquid is clear before adding the next solvent.
2. Be sure to add the solvent(s) in order. You must ensure that the solution obtained, in the previous addition, is a clear solution before proceeding to add the next solvent. Physical methods such
as vortex, ultrasound or hot water bath can be used to aid dissolving.

Chemical Information, Storage & Stability

Molecular Weight	694.83	Formula	2(C₁₇H₂₃NO₃).H₂O.H₂SO₄	Storage (From the date of receipt)	3 years-20°Cpowder
CAS No.	5908-99-6	Download SDF		Storage of Stock Solutions	1 year-80°Cin solvent 1 month-20°Cin solvent
Synonyms	N/A			SMILES	CN1C2CCC1CC(C2)OC(=O)C(CO)C3=CC=CC=C3.CN1C2CCC1CC(C2)OC(=O)C(CO)C3=CC=CC=C3.O.OS(=O)(=O)O

Read more about storage stability stock solution CAS number SMILES

Mechanism of Action

Targets/IC₅₀/Ki	mAChR 2.5 nM
In vitro	Atropine increases the release of the neurotransmitter dopamine into the superfusate in vitro at 100-500 mM and into the vitreous in vivo at 250 mg. Atropine induces spreading depression (SD) in the in vitro preparation. Atropine reduces the ERG b- and d-wave, leads to damped oscillations of RPE potentials, and reverses the ERG c-wave. Atropine suppresses myopia only at doses at which severe nonspecific side effects are observed in the retina.
In vivo	Atropine (1.0 mg/kg, i.p.), but not methylatropine (1.0 mg/kg, i.p.), prevents the enhancement of retention induced by both doses of the anticholinesterase when given immediately after training in mice. Atropine administration effectively prevents bradycardia and second-degree heart block but induces pulsus alternans and hypertension in dogs. Atropine has no effect on handling-induced acetylcholine output in the presence of 10 nM neostigmine, but causes greater and longer increases in the presence of 100 nM and 1000 nM neostigmine in rats. Atropine not only blocks the rapid eye movement (REM) sleep increases induced by CGS but it also tends to decrease REM sleep compared to atropine preceding saline in rats. Atropine decreases the time to exhaustion by 67% in intact rats and by 96.2% in adrenodemedullated (ADM) and also reduces the exercise-induced pituitary prolactin (PRL) release in both intact (50%) and ADM rats (90%).
References	[1] https://pubmed.ncbi.nlm.nih.gov/10824671/ [2] https://pubmed.ncbi.nlm.nih.gov/12821180/ [3] https://pubmed.ncbi.nlm.nih.gov/11149715/ [4] https://pubmed.ncbi.nlm.nih.gov/9483538/ [5] https://pubmed.ncbi.nlm.nih.gov/12573729/ [6] https://pubmed.ncbi.nlm.nih.gov/11716582/

Clinical Trial Information

(data from https://clinicaltrials.gov, updated on 2025-04-27)

NCT Number	Recruitment	Conditions	Sponsor/Collaborators	Start Date	Phases
NCT05667454	RECRUITING	Progressive Myopia	Erasmus Medical Center	2022-12-19	PHASE3
NCT06765603	NOT_YET_RECRUITING	Myopia	Singapore National Eye Centre	2025-02-01	PHASE2
NCT07095894	RECRUITING	Myopia	Jaeb Center for Health Research	2026-06-01	PHASE3
NCT07567040	RECRUITING	Myopia	Ohio State University	2026-05-27	PHASE3
NCT07434635	RECRUITING	Eye Disorders	University of California, San Francisco	2026-03-10	PHASE4
NCT05815784	ACTIVE_NOT_RECRUITING	Myopia	Ann & Robert H Lurie Children's Hospital of Chicago	2023-05-02	PHASE2

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Atropine sulfate monohydrate ADC Cytotoxin inhibitor

Chemical Structure

Molecular Weight: 694.83