Beta-Alanine CAS 107-95-9: Half-Life, Identity and Sourcing

Beta-alanine half-life: the short answer

“Beta alanine half life” can refer to two different measurements. A controlled study of a single oral beta-alanine dose reported individual plasma half-lives of 32.6–97.8 minutes. A separate washout study measured muscle carnosine after repeated beta-alanine supplementation and found that carnosine returned toward baseline over 12–16 weeks; its exponential model estimated a muscle-carnosine half-life of 4.6 weeks, with a 95% confidence interval of 3.2–7.0 weeks.

Study sources: Pharmacokinetics of β-Alanine Using Different Dosing Strategies and Kinetics of Muscle Carnosine Decay after β-Alanine Supplementation. These observations describe the cited study conditions; they are not dosing instructions.

Beta-alanine identity at a glance

Identity source: PubChem: Beta-Alanine, CID 239.

What beta-alanine is—and what this raw-material page is not

Beta-alanine is a beta-amino acid and a precursor used by the body in carnosine synthesis. It is not the same substance as alpha-alanine or L-alanine. Chemical identity alone does not establish a finished product’s dose, efficacy, safety, formulation, claims or regulatory status.

Commercial applications require process-specific qualification

The historical Longchang source record describes beta-alanine for synthesis of pantothenic acid, calcium pantothenate and carnosine, and also mentions biochemical-reagent and plating-corrosion-inhibitor contexts. These are legacy application descriptions, not a guarantee of suitability for a buyer’s process. The required identity, assay basis, impurity profile, particle properties and documentation depend on the intended use and destination market.

How to read the legacy Longchang source record

The old product entry lists appearance, assay, pH, solution transmittance, loss on drying, residue on ignition, metals, chloride, sulfate, ammonium, other amino acids and 25 kg/bag packaging. These are historical source-record fields—not a current specification and not current batch results. Use them only to frame the RFQ, then confirm current methods, units, limits, packaging and the applicable lot COA.

Food-use and regulatory boundary

The U.S. FDA Substances Added to Food inventory lists beta-alanine, CAS 107-95-9, with technical effects including flavor enhancer, flavoring agent or adjuvant, and nutrient supplement, and references FEMA number 3252. The same FDA page explains that FEMA assessments are independent determinations. This inventory entry must not be rewritten as universal approval for every product, dose, claim, market or use condition.

Regulatory source: FDA Substances Added to Food: Beta-Alanine.

Beta-alanine RFQ checklist

1. State “Beta-Alanine, CAS 107-95-9” and the intended process or formulation role.
2. Provide the required assay basis, analytical methods, limits and units.
3. Define impurity, metals, loss-on-drying, solution and particle requirements where relevant.
4. Request the current supplier specification, applicable lot COA and current SDS status.
5. Specify quantity, packaging constraints, destination country and required market documents.

Request current Beta-Alanine information

Email info@longchangchemical.com with CAS 107-95-9, intended process, required specification, quantity, packaging constraints, destination and document requirements.

Review the Beta-Alanine CAS 107-95-9 product sourcing page.

Frequently asked questions

What is the half-life of beta-alanine?

A single-dose pharmacokinetic study reported individual plasma half-lives of 32.6–97.8 minutes. That range belongs to the study conditions and should not be confused with the weeks-long washout of beta-alanine-derived carnosine from skeletal muscle.

Is muscle carnosine half-life the same as beta-alanine half-life?

No. Plasma beta-alanine kinetics describe beta-alanine concentration after ingestion. Muscle-carnosine washout describes how accumulated carnosine changes after repeated supplementation stops.

Does beta-alanine cause water retention?

The identity and pharmacokinetic sources cited here do not establish a universal water-retention outcome. A finished supplement may contain other ingredients, so product-specific effects should not be inferred from this raw-material identity page.

Is beta-alanine the same as L-alanine?

No. Beta-alanine is 3-aminopropanoic acid, CAS 107-95-9. The position of its amino group differs from alpha-alanine.

Does CAS 107-95-9 prove food or pharmaceutical grade?

No. A CAS number establishes substance identity, not grade, approval, process suitability or lot conformance. Those require current specifications, documents and a market-specific assessment.