Buying a research chemical is not the same as buying a supplement. The compound has to be identifiable, the salt form has to match the protocol, the quantity has to be realistic for the study, and the paperwork has to survive an audit. This guide walks the four decisions in order, and then the mistakes that cost researchers the most money.
Step one — identify the compound properly
A listing that says only “Bretazenil” tells you almost nothing. You need the full chemical identity before you can check anything against the literature. On this site every product page carries an IUPAC name, molecular formula, molar mass and — where one exists — a CAS number. SR-17018.HCL, for example, is published as CAS 2134602-45-0, formula C19H18Cl3N3O, molar mass 410.72 g/mol.
Cross-check three things before ordering:
- Does the CAS number match the compound in the paper you are following?
- Does the formula and molar mass agree with it?
- Does the salt form match what the protocol specifies?
If any of the three disagree, you are looking at the wrong listing or a different salt.
Step two — match the salt form to the protocol
Hydrochloride, fumarate and citrate salts behave differently in solution: they dissolve at different rates and they carry different mass fractions of the active moiety. A protocol written for a fumarate will not give the same molar concentration if you substitute the hydrochloride without recalculating. The form is in the product title and repeated as an attribute on the page, so it is hard to miss — but it is also the single most common ordering error.
Step three — size the quantity to the study, then to the tier
Work out grams per run, multiply by runs, add the analytical surplus, and only then look at the price table. Every product here is priced across 5g, 10g, 25g, 50g, 100g, 250g, 500g and 1000g, and the per-gram price falls at each step. Compare the arithmetic on a real line — 4F-MPH is $30 a gram at 5g and $2.30 a gram at 1000g. If the study will run long enough to consume the larger tier before the compound degrades, buying small is the more expensive choice.
The counter-argument is real too: if you only need 8g, a 100g tub is 92g of material sitting in storage against a shelf life you may not use. Buy the tier you will consume.
Step four — confirm legality where you are
Research chemical status is national and it moves. A compound freely sold in one jurisdiction can be controlled in the next. Check your own regulatory position before ordering, particularly for benzodiazepine derivatives, which are controlled in a growing number of countries. Nothing on this site is legal advice.
The mistakes that cost the most
Ordering the wrong salt
Covered above. It is the most expensive error because the material is unusable for the intended purpose and returns only apply to unopened stock.
Buying 1000g of something you have never run
Volume pricing rewards confidence. It punishes guessing. Run 5g first on any compound new to your lab.
Not requesting batch documentation up front
If your records need a certificate of analysis, ask before you order, quoting compound and tier. Ask afterwards and you may be holding a batch nobody can document.
Assuming the product is a supplement
It is not. Every compound here is a research chemical. If you are dosing yourself and following a vendor’s “suggested serving”, you are outside the specification.
Ignoring the weight field
Every variation carries its real gram weight, so shipping reflects the parcel. A basket of five 100g tubs is a heavy box and the carrier rate will say so.
What to do if something goes wrong
Report short or damaged deliveries within 48 hours with photographs. Report a parcel marked delivered but absent within 5 business days of the status change. Both routes run through the contact page, and both are set out in Shipping and Delivery and Returns and Refunds.
Start here
If you know the class but not the compound, go to the class page. If you know the compound, go straight to the index.
Benzodiazepines · Stimulants · Dissociatives · Tryptamines · Psychedelics · Cannabinoids · Others