research use only

Ademetionine (S-Adenosylmethionine) Methyl Donor

Name: Ademetionine (S-Adenosylmethionine)
Brand: Selleck Chemicals
SKU: S5109
Availability: InStock
Rating: 5 (7 reviews)

Cat.No.S5109

Ademetionine (AdoMet, S-Adenosylmethionine, SAMe), also known as SAMe, is a specific form of the amino acid methionine known as S-adenosyl-methionine. It is essential for the formation of glutathione, a water-soluble peptide that helps the body fight free radicals.

Chemical Structure

Molecular Weight: 398.44

Jump to

Quality Control

Batch: Purity: 99.64%

99.64

Related Targets	Dehydrogenase HSP Transferase P450 (e.g. CYP17) PDE phosphatase PPAR Vitamin Carbohydrate Metabolism Mitochondrial Metabolism
Other Endogenous Metabolite Inhibitors	4-HNE (4-Hydroxynonenal) Heparan Sulfate Oleic acid (cis-9-Octadecenoic acid) Sodium L-lactate 3-Hydroxybutyric acid (BHB acid)

Solubility

In vitro
Batch:

DMSO : 80 mg/mL (200.78 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO.)

Water : 80 mg/mL

Ethanol : Insoluble

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.
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.
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.	4.000mg/ml (10.04mM)	Taking the 1 mL working solution as an example, add 50 μL of 80 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.	0.500mg/ml (1.25mM)	Taking the 1 mL working solution as an example, add 50 μL of 10 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.

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	398.44	Formula	C₁₅H₂₂N₆O₅S	Storage (From the date of receipt)	3 years -20°C powder (seal)
CAS No.	29908-03-0	Download SDF		Storage of Stock Solutions	Solutions are unstable. Prepare fresh or purchase small, pre-packaged sizes. Repackage upon receipt.
Synonyms	AdoMet, S-Adenosylmethionine, SAMe			SMILES	C[S+](CCC(C(=O)[O-])N)CC1C(C(C(O1)N2C=NC3=C(N=CN=C32)N)O)O

Read more about storage stability CAS number SMILES

Mechanism of Action

In vitro	Ademetionine (S-adenosylmethionine; SAMe) is a ubiquitous metabolite present in all cells and biological fluids, and serves as a methyl donor in a multitude of different methylation reactions involving proteins, phospholipids, catecholamines and DNA.
In vivo	SAMe is able to cross the intestinal wall and increase plasma levels. Studies in rats reveal that absorption of the drug is much better after intraduodenal administration compared to oral administration. The systemic bioavailability after oral SAMe administration appears to be low. SAMe dose-dependently (12.5, 25, 50, 100 and 200 mg/kg sc.) decreases immobility time in the forced swimming test in mice and rats. Chronic treatment with SAMe is associated with an increase in density of b-receptors, and a decrease in the affinity of a1 adrenoceptors for phenylephrine in rat cerebral membranes.
References	[1] https://pubmed.ncbi.nlm.nih.gov/15989609/

Clinical Trial Information

(data from https://clinicaltrials.gov, updated on 2026-03-20)

NCT Number	Recruitment	Conditions	Sponsor/Collaborators	Start Date	Phases
NCT07367724	RECRUITING	Obstructive Hypertrophic Cardiomyopathy (oHCM)	China National Center for Cardiovascular Diseases	2026-01-01	PHASE2
NCT06922669	RECRUITING	Drug Induced Liver Injury	General Hospital of Shenyang Military Region	2025-06-24
NCT07068191	RECRUITING	Metabolic Dysfunction-associated Fatty Liver Disease (MAFLD); Hepatomegaly; Nonalcoholic Fatty Liver (NAFL); Nonalcoholic Fatty Liver Disease (NAFLD); Fatty Liver; Fatty Liver, Alcoholic; Fatty Liver, Nonalcoholic; Fatty Liver Disease	Phenomen Pharma	2025-06-19
NCT05312372	Withdrawn	Esophageal Squamous Cell Carcinoma	Institut de Recherches Internationales Servier\|ADIR a Servier Group company\|Servier	2025-05	Phase 1\|Phase 2
NCT05775718	Recruiting	Bone Marrow Transplant\|Stem Cell Transplant	University of Colorado Denver\|GlaxoSmithKline	2024-12-01	Phase 2
NCT05279196	Not yet recruiting	Muscle Injury	University Hospital Montpellier	2024-09	Not Applicable

Tech Support

Handling Instructions

Tel: +1-832-582-8158 Ext:3

If you have any other enquiries, please leave a message.

C1=C0/X	C1:	LOG(C1):
C2=C1/X	C2:	LOG(C2):
C3=C2/X	C3:	LOG(C3):
C4=C3/X	C4:	LOG(C4):
C5=C4/X	C5:	LOG(C5):
C6=C5/X	C6:	LOG(C6):
C7=C6/X	C7:	LOG(C7):
C8=C7/X	C8:	LOG(C8):