Cosmetic Ingredient Standards

Drometrizole trisiloxane (Standard) is the analytical standard of Drometrizole trisiloxane. This product is intended for research and analytical applications. Drometrizole trisiloxane is a photostable, oil-soluble chemical UVB and UVA filter with two absorption peaks, one at 303 nm (UVB) and the other at 344 nm (UVA). Drometrizole trisiloxane can be used in cosmetics to absorb ultraviolet radiation.

Chloroxylenol (Standard) is the analytical standard of Chloroxylenol. This product is intended for research and analytical applications. Chloroxylenol is a broad-spectrum antibacterial agent that can be used to control bacteria, algae, fungi and viruses.

Imidazolidinyl urea (Standard) is the analytical standard of Imidazolidinyl urea. This product is intended for research and analytical applications. Imidazolidinyl urea is a commonly used antibacterial preservative in cosmetics and pharmaceuticals that releases formaldehyde through decomposition. Imidazolidinyl urea can also be used in the preparation of multifunctional hydrogels for the care of infectious wounds. Imidazolidinyl urea has broad-spectrum antibacterial activity, which mainly inhibits the reproduction of gram-negative bacteria and gram-positive bacteria, and restricts the growth of yeast and mold to a certain extent. Imidazolidinyl urea can induce non-histaminergic allergy by MRGPRX2 activation of mast cells.

Climbazole (Standard) is the analytical standard of Climbazole. This product is intended for research and analytical applications. Climbazole (BAY-e 6975) is a potent antifungal agent. Climbazole also is a potent inducer of rat hepatic cytochrome P450.

Triclosan (Standard) is the analytical standard of Triclosan. This product is intended for research and analytical applications. Triclosan is a broad-spectrum antibacterial agent that inhibits bacterial fatty acid synthesis at the enoyl-acyl carrier protein reductase (FabI) step. Triclosan inhibits E. coli enoyl-acyl carrier protein reductase (FabI) and FabI containing a glycine-to-valine substitution at position 93 (FabIG93V) with IC₅₀s of 2 µM and 10 µM, respectively. Triclosan causes apoptotic effect in cultured rat neural stem cells (NSC). Triclosan exacerbates colitis and colitis-associated colorectal tumorigenesis in animal models.

Bisoctrizole (Standard) is the analytical standard of Bisoctrizole (HY-B0897). This product is intended for research and analytical applications. Bisoctrizole is a broad-spectrum UVA/UVB absorber that belongs to the benzotriazole class of compounds. Bisoctrizole absorbs UV light through hydroxyphenyl groups, causing reversible electronic transitions, thereby converting light energy into heat energy, inhibiting UV-induced material or skin damage. Bisoctrizole is highly efficient in capturing UVA (320-400 nm) and some UVB (280-320 nm) radiation. Bisoctrizole delays the photodegradation of materials such as silicones, improving their UV aging resistance or enhancing the photoprotective ability of sunscreen products.

Bulleyaconitine A (Standard) is the analytical standard of Bulleyaconitine A. This product is intended for research and analytical applications. 0

2,6-Diaminopyridine (Standard) is the analytical standard of 2,6-Diaminopyridine (HY-Y0198). This product is intended for research and analytical applications. 2,6-Diaminopyridine is an intermediate and coupling agent for hair dyes. 2,6-Diaminopyridine participates in organic synthesis reactions such as N-methylation and can bind metal ions by forming macrocyclic ligands through condensation with aldehydes. 2,6-Diaminopyridine can be used to synthesize the analgesic phenazopyridine hydrochloride (HY-B0985).

2,7-Dihydroxynaphthalene (Standard) (2,7-DHN (Standard)) is the analytical standard of 2,7-Dihydroxynaphthalene (HY-W015451). This product is intended for research and analytical applications. 2,7-Dihydroxynaphthalene (2,7-DHN) is a substrate of a new group of aromatic prenyltransferases in fungi and can be catalyzed to undergo a regiospecific prenylation reaction. 2,7-Dihydroxynaphthalene can undergo reactions such as oxidation and substitution.

5-Bromo-5-nitro-1,3-dioxane (Standard) is the analytical standard of 5-Bromo-5-nitro-1,3-dioxane (HY-W014316). This product is intended for research and analytical applications. 5-Bromo-5-nitro-1,3-dioxane is a broad-spectrum antimicrobial agent active against Gram-positive bacteria, Gram-negative bacteria and fungi. 5-Bromo-5-nitro-1,3-dioxane oxidizes free thiol groups to their corresponding disulfides. 5-Bromo-5-nitro-1,3-dioxane induces intracellular substance leakage in Escherichia coli and Staphylococcus aureus. 5-Bromo-5-nitro-1,3-dioxane modulates the oxygen consumption of Escherichia coli and Staphylococcus aureus.

Bronopol (Standard) is the analytical standard of Bronopol. This product is intended for research and analytical applications. Bronopol is an antibacterial agent with low toxicity (to mammals) and high activity (especially against Gram-negative bacteria). Bronopol oxidizes protein thiols, inhibits enzymatic activity, and exhibits antibacterial activity. Bronopol is also a formaldehyde releaser.

Chlorphenesin (Standard) is the analytical standard of Chlorphenesin. This product is intended for research and analytical applications. Chlorphenesin is a reversible antigen-associated immunosuppressant. Chlorphenesin is an antibacterial and antifungal agent used in numerous eye care cosmetics.

Dichlorophen (Standard) is the analytical standard of Dichlorophen (HY-12638). This product is intended for research and analytical applications. Dichlorophen is a chlorophenol antimicrobial agent that can destroy the integrity of microbial cell membranes and interfere with the activity of metabolic enzymes. Dichlorophen can covalently bind to the thiol groups of microbial proteins and has broad-spectrum antibacterial, antifungal and anthelmintic activity. Dichlorophen can be used as an antimicrobial agent in the study of drug-resistant bacterial infections.