4′-Phosphopantetheine, Sodium salt

What it means: Purity indicates the proportion of the target compound relative to total mass. A purity of ≥ 95% means that at least that percentage of the material is the stated compound, with impurities (residual solvents, salts, or related by-products) accounting for the remainder.

Why it matters:

• Enzyme kinetics and Michaelis–Menten analyses require accurate substrate concentrations — lower purity introduces systematic error into calculated K_m and V_max values.
• In vitro pathway reconstitution assays can be confounded by trace impurities that act as inhibitors or competing substrates.
• Isotopic labeling or mass spectrometry applications demand high purity to minimise background signal from related compounds.

How to interpret here: This lyophilized biochemical is supplied at ≥ 95%, verified by HPLC. A Certificate of Analysis (COA) with the measured purity value is available for download on the product page. If your assay requires a tighter specification, custom analytical packs can be requested via the Customization tab.

What it means: Form refers to the physical state in which the compound is supplied. Lyophilized powder indicates the material has been freeze-dried from solution, removing solvent to yield a dry, stable solid.

Why it matters:

• Lyophilized powder typically offers longer shelf-life and better thermal stability during transit compared with pre-dissolved solutions.
• You control the reconstitution solvent, concentration, and buffer composition — important for assays with strict ionic strength or pH requirements.
• Aliquoting from a dry powder allows preparation of multiple independent stock solutions to minimise freeze-thaw cycles.

How to interpret here: Receive as Lyophilized powder; dissolve in your buffer of choice immediately before use. For CoA thioester derivatives, prepare working solutions on ice and use promptly to avoid hydrolysis. Recommended storage: −20 °C.

What it means: Molecular Weight (MW) is the mass of one mole of the compound, expressed in g/mol. For this product the MW is 358.35 g/mol (free acid basis).

Why it matters:

• Used to calculate the molar concentration of working solutions from a weighed mass — critical for enzyme kinetics where substrate concentration must be accurately defined.
• For salt forms (e.g., lithium, sodium), the listed MW is the free-acid equivalent. Use this value when normalising across different salt variants of the same compound.
• In LC-MS applications, the MW informs the expected parent ion m/z and helps confirm compound identity in complex matrices.

How to interpret here: Use 358.35 g/mol (free acid basis) to convert between mass (mg) and moles when preparing stock solutions. For CoA thioester derivatives supplied as salt forms, the free-acid MW is provided so you can normalise accurately regardless of the counterion present.

What it means: Solubility describes the ability of the compound to dissolve in a given solvent. Soluble in water indicates the compound dissolves readily in aqueous media without the need for organic co-solvents.

Why it matters:

• Direct aqueous solubility simplifies stock solution preparation and avoids the need for DMSO or other co-solvents that can inhibit sensitive enzymes.
• CoA thioester derivatives require aqueous buffer compatibility — confirmed solubility in water ensures the compound is accessible to enzyme active sites under physiological conditions.
• Solubility is pH-dependent for compounds with ionisable groups; verify that your assay buffer pH is within the working range.

How to interpret here: This compound is Soluble in water. Prepare stock solutions in water or aqueous buffer at your required pH. If precipitation is observed, warm gently (do not exceed 37 °C) or adjust pH. Always prepare fresh solutions to avoid hydrolysis of labile thioester bonds.

Tip: Solubility data reflects tested conditions; actual solubility in your buffer system may vary with ionic strength and temperature.

What it means: Source indicates how the compound was produced. Biosynthetic means the compound was generated using biological systems (enzymatic or microbial processes) rather than purely chemical synthesis routes.

Why it matters:

• Biosynthetic production can yield the correct stereochemical configuration and post-synthetic modifications inherent to the natural compound.
• For CoA thioesters, Biosynthetic production can result in the naturally occurring 3',5'-bisphosphate adenosine backbone without racemisation artefacts.
• Some regulatory or method-development contexts distinguish biosynthetic from synthetic origin; this value supports traceability.

How to interpret here: This product is manufactured via Biosynthetic processes. The purity (≥95%) and COA confirm that biosynthetic origin does not compromise compound quality for biochemical applications. If synthetic origin is required for your specific application, please contact us.

What it means: Activity describes the biochemical role of the compound. Enzyme Substrate / Cofactor indicates this molecule participates directly in enzymatic reactions — either by being chemically transformed by the enzyme (substrate) or by enabling enzyme activity without being consumed (cofactor).

Why it matters:

• Substrates define the reaction being studied; selecting the correct acyl-CoA chain length and structure is critical for enzyme specificity assays.
• Cofactor roles mean the compound may be regenerated in cyclic reactions — understanding this affects how you design coupled assays and substrate depletion controls.
• Activity classification guides literature searching: filter for enzymes that use this compound class as substrate/cofactor to identify compatible assay systems.

How to interpret here: This compound is classified as Enzyme Substrate / Cofactor. Use it in enzyme activity assays requiring CoA thioester substrates, in coupled spectrophotometric assays (e.g., DTNB-based thiol release), or in pathway reconstitution experiments where this specific acyl group is required.