Products

O-Methylisourea Hemisulfate (CAS 52328-05-9) is the hemisulfate salt of O-methylisourea, a guanidinating reagent widely used for the chemical conversion of lysine residues to homoarginine in proteins and peptides. Structurally, O-Methylisourea Hemisulfate consists of a methyl isourea cation (C₂H₆N₂O⁺) associated with a half-equivalent of sulfate anion, forming the hemisulfate salt. The O-methylisourea molecule features a carbamimidic acid methyl ester structure: a central carbon atom bonded to an amino group, an imino nitrogen, and a methoxy group.

1H-1,2,4-Triazole-3-thiol (3-Mercapto-1,2,4-triazole, CAS 3179-31-5) is a heterocyclic compound featuring a five-membered 1,2,4-triazole ring with a thiol (mercapto) substituent at the 3-position. The molecule exists in tautomeric equilibrium between the thiol (-SH) and thione (=S) forms, with the thione tautomer (1,2-dihydro-3H-1,2,4-triazole-3-thione) being the predominant form in the solid state.

7-Dehydrocholesterol (Provitamin D₃, CAS 434-16-2) is a naturally occurring sterol and the immediate biosynthetic precursor to vitamin D₃ (cholecalciferol). Structurally, 7-Dehydrocholesterol is a cholesterol derivative differing from cholesterol by the presence of an additional double bond at the C7 position of the B-ring of the steroid nucleus, forming a conjugated diene system between C5 and C7.

Creatine Phosphate Disodium Salt (Phosphocreatine disodium salt, CAS 922-32-7) is the disodium salt form of creatine phosphate, a naturally occurring phosphorylated guanidino compound that serves as a high-energy phosphate reservoir in vertebrate skeletal muscle, cardiac muscle, and brain. Structurally, Creatine Phosphate Disodium Salt consists of a creatine backbone (N-methylglycine) with a phosphoramidate group attached to the guanidino nitrogen, existing as the disodium salt.

Isoprenaline Hydrochloride (Isoproterenol hydrochloride, CAS 51-30-9) is the hydrochloride salt form of isoprenaline, a synthetic catecholamine and non-selective β-adrenoceptor agonist. The molecule features a catechol (3,4-dihydroxyphenyl) core with a hydroxyethyl side chain bearing an isopropylamino substituent, forming the characteristic β-ethanolamine pharmacophore of adrenergic agonists. As a hydrochloride salt,

2-Methyl-2-thiopseudourea Sulfate (S-Methylisothiourea sulfate, CAS 867-44-7) is a sulfur-containing guanidino compound and a potent inhibitor of nitric oxide synthase (NOS). Structurally, 2-Methyl-2-thiopseudourea Sulfate consists of a methyl isothiourea cation (C₂H₆N₂S⁺) associated with a sulfate anion, existing as the hemisulfate salt with a 2:1 stoichiometry (two methylisothiourea cations per sulfate).