D-Theanine Powder is the D-form of theanine, a chiral amino acid derivative related to glutamine. It does not occur naturally and is mainly obtained through controlled chemical synthesis, which makes it suitable for research and technical use rather than food or dietary applications.
This material is valued for its defined stereochemistry and stable structure. It is commonly used in chiral studies, analytical work, method development, and other laboratory or industrial research fields where enantiomer-specific materials are required.
Shaanxi Medibridge Biotech Co., Ltd. supplies this product with stable quality and clear specifications. We support flexible purity options, consistent supply, and technical documentation, helping customers use the material smoothly in research and development projects.

COA
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Product Name |
CAS Number |
Batch Number |
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D-Theanine Powder |
5822-62-8 |
MB2601031130 |
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Manufacturer Date |
Analysis Date |
Expiry Date |
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2026-01-03 |
2026-01-04 |
2028-01-02 |
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Sample Qty Base |
Packing |
Test Method |
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1.23 KGS |
10GS/bottle |
HPLC |
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Item |
Standard |
Results |
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Appearance |
White to off-white powder |
Complies |
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Odor |
Characteristic |
Complies |
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Identification |
Positive |
Positive |
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Assay (HPLC) |
≥ 99.0% |
99.28% |
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Optical Rotation |
Conforms to D-form |
Complies |
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Loss on Drying |
≤ 5.0% |
2.41% |
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Residue on Ignition |
≤ 0.5% |
0.18% |
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Heavy Metals |
≤ 10 ppm |
Complies |
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Lead (Pb) |
≤ 2 ppm |
Complies |
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Cadmium (Cd) |
≤ 1 ppm |
Complies |
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Mercury (Hg) |
≤ 0.1 ppm |
Complies |
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Arsenic (As) |
≤ 1 ppm |
Complies |
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Total Plate Count |
≤ 1000 cfu/g |
Complies |
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Yeast & Mold |
≤ 100 cfu/g |
Complies |
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E. Coli |
Negative |
Negative |
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Salmonella |
Negative |
Negative |
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Storage |
Store in cool & dry place. keep away from strong light and heat |
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Conclusion |
The batch conforms to the IN-HOUSE standard |
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Applications
This material is mainly used in research and technical fields where the D-form of theanine is specifically required. In chiral chemistry, it is often applied in enantiomer comparison studies, helping researchers understand how different stereochemical forms behave under the same conditions. It is also commonly used as a reference compound in analytical work, including method development, calibration, and validation in laboratory settings.
In academic and industrial research, this compound can support studies related to amino acid derivatives, chiral resolution, and structure–activity relationships. Because its configuration is clearly defined, it is useful in experiments where stereochemistry needs to be controlled or evaluated. Researchers may also use it when studying synthesis pathways, degradation behavior, or stability of chiral compounds under different processing conditions.
In addition, this material is suitable for use in chemical synthesis as an intermediate or comparative substance. It can be applied in early-stage R&D projects, feasibility studies, and internal testing where precise chemical identity matters more than large-scale production. Some customers also use it for internal standards, training purposes, or non-commercial experimental work.
It is important to note that this product is intended for laboratory, research, or industrial use only. It is not designed for food, dietary supplement, or pharmaceutical applications. Users should handle it according to standard laboratory practices and ensure compliance with local regulations when applying it in any research or development project.

Key Features
This material is defined by its clear D-configuration, which makes it suitable for work where stereochemistry matters. Its chemical identity is stable and well characterized, helping researchers avoid uncertainty when running comparative or repeat experiments. Batch-to-batch consistency is a key point, allowing users to rely on similar performance across different projects or timelines.
The powder form is easy to handle in a laboratory setting. It weighs accurately, dissolves in water under normal conditions, and fits well into standard analytical and research workflows. Because of its predictable behavior, it is often chosen as a reference or comparison material in chiral studies, analytical testing, and method development work.
Different purity levels can be prepared to match specific research or internal testing needs, rather than forcing customers into a single fixed specification. Technical data, basic documentation, and supporting information can be provided when required, making it easier to integrate the material into existing R&D systems.
Overall, the key value lies in its defined structure, reliable quality, and practical usability for laboratory and industrial research environments.

D-theanine vs L-theanine
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Item |
D-theanine |
L-theanine |
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Chemical form |
D-enantiomer (R-form) |
L-enantiomer (S-form) |
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Molecular formula |
C₇H₁₄N₂O₃ |
C₇H₁₄N₂O₃ |
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Molecular weight |
174.2 |
174.2 |
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Natural occurrence |
Not naturally occurring |
Naturally found in tea leaves |
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Source |
Chemical synthesis |
Plant extraction or synthesis |
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Main use |
Research and technical applications |
Food, dietary, and supplement use |
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Typical application fields |
Chiral studies, analytical research, method development |
Nutrition, functional foods, supplements |
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Regulatory status |
Not approved for food or dietary use |
Widely accepted for food and supplement use |
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Consumption purpose |
Not intended for human consumption |
Commonly used for human consumption |

Why Choose Our D-Theanine?
Choosing the right supplier matters as much as choosing the right material. What we focus on is not exaggerated claims, but stable supply and clear specifications that customers can actually rely on in daily work. Every batch is produced and handled under controlled conditions to keep the quality consistent and the basic parameters clear.
We understand that different projects often need different purity levels or packaging sizes. That is why specifications can be adjusted based on real application needs instead of forcing one fixed option. This flexibility helps reduce unnecessary cost and makes the material easier to fit into ongoing research or internal testing.
Shaanxi Medibridge Biotech Co., Ltd. works closely with customers from inquiry to delivery. Technical information, basic documentation, and communication support are available when needed, especially for research or industrial users who require clear data rather than marketing language. With stable logistics, practical service, and a focus on long-term cooperation, we aim to be a reliable source rather than just a one-time supplier.

FAQ
Q: What are the benefits of D-theanine powder?
A: It is mainly used for research and technical purposes where the D-form of theanine is required.
Q: What is the difference between L-theanine and D-theanine?
A: They share the same chemical formula but have different stereochemical structures and applications.
Q: What is this product used for?
A: It is used in laboratory research, analytical work, and chiral studies.
Q: Is this material suitable for food or dietary supplements?
A: No, it is not intended for food, dietary, or human consumption.
Q: Is it naturally derived or synthetic?
A: It is obtained through controlled chemical synthesis rather than natural extraction.
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