Description
The D-enantiomer of Aspartic Acid, distinct from the natural L-form by stereochemistry. The compound has emerged as a sports-supplement ingredient marketed for testosterone-support claims, though clinical evidence for these claims remains debated.
White crystalline powder. Slightly water-soluble.
We supply food-grade and supplement-grade D-Aspartic Acid from manufacturers in China holding ISO, Halal, Kosher and other certifications relevant to the product and production.
Common market grades include Standard Supplement Grade (DAA at 99 percent purity, the dominant testosterone-support format), High-Purity Pharmaceutical Grade, and pre-blended D-Aspartic Acid systems for sports-nutrition formulations.
Bulk and reduced-MOQ shipments. Batch-level COA covering assay, specific rotation (confirming D-enantiomer), residual L-Aspartic Acid, heavy metals, and microbiology.
Introduction
D-Aspartic Acid is the D-enantiomer of Aspartic Acid, produced by enzymatic resolution of DL-Aspartic Acid or by direct enzymatic synthesis using D-amino acid aminotransferase. The compound occurs naturally in the pituitary gland and testes at low concentrations.
Commercial interest emerged in the 2000s following research suggesting that D-Aspartic Acid plays a role in testosterone biosynthesis regulation. Sports supplements marketed for testosterone support and bodybuilding became the dominant commercial application.
Regulatory status varies by jurisdiction. Sold widely as a dietary supplement, though clinical evidence for the testosterone-support claims in healthy non-deficient men remains mixed.
Strategic positioning serves the sports nutrition and male-enhancement supplement segments. Cost is meaningfully higher than L-Aspartic Acid due to the additional processing required to produce the D-enantiomer specifically.
Where it is used
- Sports nutrition supplements: testosterone-support and male-enhancement positioned formulations
- Bodybuilding supplements: standalone D-Aspartic Acid (DAA) products
- Pharmaceutical research applications including neurotransmitter and endocrine research
- Specialty cosmetic applications
- Research and analytical applications
Technical data
| Item | Specification |
|---|---|
| Appearance | White crystalline powder |
| Assay (dry basis) | ≥ 99.0% |
| Specific rotation | −24.5° to −26.0° |
| L-Aspartic Acid impurity | ≤ 1.0% |
| Loss on drying | ≤ 0.3% |
| Heavy metals (as Pb) | ≤ 10 mg/kg |
| Particle size | Per customer specification |
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