Description
These notes describe the 1000 mg unit of CDP-choline as a laboratory material: what identifies it, how its structure constrains handling, and which entries the accompanying document has to carry. Zobacz również odczynnik w opakowaniu gramowym: IDRA-21, czystość ≥ 99% 1000mg.
Identity of the material
Four entries identify the substance without ambiguity.
- Common names: citicoline, CDP-choline, cytidine 5′-diphosphocholine.
- CAS number: 987-78-0.
- Molecular formula: C14H26N4O11P2.
- Molar mass: 488.33 g/mol.
- Note: trade listings frequently carry a mis-copied formula and molar mass for this compound; the values above follow reagent supplier and reference databases.
Where the compound sits among choline derivatives
It is a conjugate rather than a simple salt of choline.
- Class: nucleotide-choline conjugate, formally a pyrophosphate diester.
- Building blocks: a cytidine nucleoside and a choline unit joined through a diphosphate bridge.
- Related materials on the shelf: choline salts and glycerophosphocholine, which differ in molar mass and in solubility.
- Consequence: molar comparisons with those materials require the full molar mass, not the choline fraction.
Structural elements that matter in handling
Three fragments of the molecule set the practical rules.
- Quaternary ammonium centre: permanently charged, which keeps the compound polar across the usual pH range.
- Diphosphate bridge: an ester linkage, and esters of phosphoric acid are the part of the molecule to protect from strongly acidic or strongly alkaline media.
- Cytosine base: an aromatic chromophore, useful for detection and a reason to keep solutions away from prolonged illumination.
- Overall polarity: high water affinity, which is why the solid is supplied in a sealed sachet.
Storage, weighing and solution preparation
The packaging is part of the specification, not merely a container.
- Keep the sachet sealed until use and reclose it immediately; polar phosphate solids readily pick up atmospheric moisture.
- Let the packet reach room temperature before opening, so that moisture does not condense on cold material.
- Weigh quickly and record the ambient conditions alongside the mass.
- Prepare aqueous stocks fresh and note the water quality used.
What the paperwork must state
A batch without documentation cannot be requalified later.
- Lot marking, assay method and the purity determined by that method.
- Water content, since it changes the mass basis of every calculation.
- Storage temperature recommended by the manufacturer for that lot.
- Date of packaging and the expiry marking.
Pokrewne odczynniki laboratoryjne
- IDRA-21, czystość ≥ 99% 1000mg
- ALCAR / Acetylo-L-Karnityna – Czystość ≥ 99% masa netto 1000mg.
- Methylenblau / METHYLENBLAU. Reinheit ≥ 99,99% 1000mg.
- Methylene Blue / METHYLENE BLUE. Purity ≥ 99.99% 1000mg.
Warunek dopuszczenia do pracy
Produkt nie może być stosowany u ludzi w żadnej postaci. Zastosowanie weterynaryjne jest równie wykluczone. Materiał służy wyłącznie jako wzorzec i odczynnik w analizie HPLC oraz GC-MS. Poza kategorią produktów leczniczych i spożywczych.
