Frequently Asked Questions

Payment processing on this site is currently a mock placeholder for demonstration purposes — no real charges are made. Before launch, the store owner should connect a real payment provider suited to their business.

Enter your discount code in the discount field at checkout before placing your order. The discount is applied to your order total immediately. Only one discount code can be used per order.

No — one code per order. If you have several codes, use the one that gives you the best price.

We ship domestically within the United States only, including US territories. We do not ship internationally.

Shipping is a flat $10 on all orders, and free on orders over $300.

Orders are typically processed within 1–2 business days (placeholder — confirm your actual handling time). Once shipped, your tracking number is emailed to you automatically.

A tracking link is emailed to the address on your order as soon as the shipping label is created. You can also find your orders in your account's order history.

Yes. Every batch is submitted for independent third-party analysis (HPLC and mass spectrometry), and a Certificate of Analysis (COA) is available for each batch.

Our standard for catalog compounds is ≥99% purity unless otherwise stated on the product page. Refer to the batch COA for exact results.

As general guidance, store lyophilized vials cold and away from light. Consult the product page and standard laboratory practice for compound-specific handling.

Due to product integrity requirements, research products are non-returnable once shipped. The exception is orders that arrive damaged or incorrect — contact us within 7 days of delivery and we will make it right.

Email support@keystoneaminos.com within 7 days of delivery with your order ID and photos of the issue. We will arrange a replacement or refund per our returns policy.

An account gives you access to your order history and lets you save your details for faster checkout.

Every account automatically receives a unique referral code. When someone places an order using your code, you earn a 10% commission on that referred order, paid out according to the affiliate terms in our Terms of Service.

No. All products are strictly for laboratory research use only. They are not for human or veterinary consumption, and no product is intended to diagnose, treat, cure, or prevent any disease.

Purchasers must be at least 21 years of age and qualified researchers or laboratory professionals purchasing on behalf of a legitimate research organization.

Yes. We reserve the right to refuse or cancel any order at our discretion, including orders we believe may violate our research-use terms.