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What is Kopexil? It is a name for diaminopyrimidine oxide, an ingredient used in cosmetic hair care. Health Canada lists Kopexil as a name for the substance under CAS 74638-76-9. The name identifies a chemical. It does not tell you the strength of a stock solution, the grade of a powder, or the performance of a finished bottle.
At Maxmedchem, we manufacture and supply wholesale Kopexil powder for business customers. If you buy or formulate with it, make the ingredient identity the first line of your purchase brief. Put the commercial name on the request if it helps the supplier find the item. Use the chemical identity, material form, and assay basis to decide whether the offer meets your brief.
What Is Kopexil on a Specification Sheet?
Match the name to the material
Check three fields together. Use Diaminopyrimidine Oxide as the ingredient name, CAS 74638-76-9 as the identity reference, and the actual material form to describe what arrives. The Health Canada ingredient entry gives the identity and lists topical conditioning uses in its database context. Our product page describes a white powder and lists 98% by HPLC. Treat that as a public specification and ask for the actual lot result.
A name can survive a change in material form. For example, a seller can offer a solution that contains the same ingredient as a dry powder. These offers can differ in active content, solvent, handling, storage, and label declaration. Get those details in writing before your lab uses one as a direct substitute for the other.
Ask how the supplier measures the result
HPLC separates substances so the lab can measure them. A result expressed as the area of a peak describes a fraction of the detected signal. A mass assay answers how much material is present by weight under the stated method and basis. You need the second type of information, or a justified conversion, to weigh a precise active dose.
Check whether the reported value applies to the sample as received or to its dry basis. Ask whether water and other material are accounted for. If the certificate is unclear, a short call between the buyer and the lab can prevent a costly batch error. Keep the answer with the lot record so the next shift uses the same rule.
What Is Kopexil Used for in Cosmetic Development?
Give the ingredient a job you can measure
Start with the reason you are considering it. A buyer might want a particular ingredient for a scalp-care range. A formulator might want to compare a serum base with and without it. A product manager might have a conditioning target. Each brief needs a different test. Write the target in words the lab and the marketing team both understand.
For a conditioning claim, choose an endpoint like wet combing force or a defined feel rating. An endpoint is the result you plan to measure. Set the conditions before you compare the samples. Use the same hair source, wash steps, dose, and rinse for each group. A measured change then has a defined meaning.
Place the regulatory number in its proper role
The EU Cosmetics Regulation sets a 1.5% maximum in ready-to-use hair products for this ingredient. Your assessor should review the formula, dose, and directions before you choose a level. The maximum gives a boundary for the listed use. It does not tell you which concentration offers a useful result, the best feel, or the lowest cost.
Check each market on its own terms. An ingredient inventory entry can help you identify the substance, while local rules govern the type of product and its claims. In the United States, FDA identifies hair regrowth claims as drug claims. Plan your claim review before you order packaging or circulate distributor copy.
What Is Kopexil Worth Testing for in Your Base?
Set up a small set of trials before you approve a bulk order. Make the base alone. Then make the base with the selected grade at the level approved for the pilot. If you use a stock, include the same amount of its carrier in the control. This gives you a fairer comparison and makes changes in viscosity or clarity easier to explain.
Use a batch calculation that your lab can reproduce. A 40 kg batch at an illustrative 0.25% active by weight needs 0.10 kg of active. If a valid as-received assay confirms 98% by mass, the starting powder amount is about 102 g. Include that amount in the batch total. These numbers show the calculation only. The project team still needs to select and assess the actual dose.
Record the order of addition, temperature, pH, mixing time, and how the batch looks after cooling. Look again at set points during storage. A clear sample on the bench can develop a deposit over time. If that happens, investigate which step or formula change caused it. Keep a base control so you can tell whether the change came from the carrier, the main formula, or the new material.
Set your first failure rule before you make the sample. For instance, decide whether any visible deposit after a defined storage period sends the trial back to formulation. If the same condition is judged differently each time, a supplier change will be hard to evaluate. A consistent rule helps you compare lots and keep the project moving.
Do not treat data from a single solvent as a solubility guarantee for a finished base. Surfactants, salts, fragrance, and the temperature profile can change the result. If you plan to use a premix, measure how it behaves across its planned hold time and how much active it delivers after mixing.
Agree on a short list of lot changes that require another look. A change in assay basis, carrier, or material form can alter how much you weigh or how the base behaves. Ask your supplier how such changes are communicated. If a new lot arrives before review, put it aside until quality and formulation staff can compare it with the qualified material. A documented review is faster than trying to explain a failed batch after the stock has been used.
What Is Kopexil Worth to a Buyer With a Launch Deadline?
The best purchasing decision depends on which uncertainty is most expensive. If you are still picking a formula, a sample and technical file may be worth more than a discount for volume. If you already passed a pilot, a documented match between the sample and commercial lot may matter more than the speed of the first quote.
Ask your supplier to state the grade, package size, assay basis, sample options, and document scope on the same request. Use the Maxmedchem ingredient to find the exact raw materials needed for your brief. When you compare several inputs, ask for comparable document sets and link the data to their lots.
We prefer to see the actual problem before a purchase order. Are you trying to get a clear serum? Are you replacing a grade that behaved well in a shampoo? Are you building a second source for a formula already in production? Each question changes the sample plan. Review the Maxmedchem manufacturing profile and tell us which qualification checks matter to your team.
Request a sample and a lot-specific data package. Talk with Maxmedchem about Kopexil powder supply. Include your target market, planned format, batch size, and when you need the first pilot.
FAQs
What is the INCI name for Kopexil?
Diaminopyrimidine Oxide. Use the correct local label name and confirm it against the actual material supplied.
What CAS number should I check?
74638-76-9, together with the ingredient name and grade.
Is Kopexil a peptide?
It is a small molecule with the formula C4H6N4O. It is not an amino acid chain.
Is a 98% HPLC result the same as a 98% weight assay?
Ask for the method and basis. An area percentage alone does not give a weight assay.
Does Kopexil have the same evidence as minoxidil?
They are different substances. Use evidence for the exact ingredient, formula, and intended use.
References
Health Canada. Diaminopyrimidine Oxide ingredient record. Identity, name, CAS and topical role.
European Commission. Cosmetic ingredient database guidance. Role and limitations of the ingredient inventory.
EU Cosmetics Regulation, Annex III, entry 93. Restriction for hair products.
U.S. FDA. Is It a Cosmetic, a Drug, or Both?. Intended use and hair regrowth claims.
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