Magnesium Creatine Citrate Phosphate Creatine–Mg–citrate–phosphate complex

A formulated complex has no single CAS and no monograph, so the specification is the product: creatine by HPLC, magnesium by ICP, citrate and phosphate reported, creatinine capped. Any quotation that does not state the creatine percentage is quoting a powder, not a creatine source — divide the price by the creatine assay before comparing against creatine monohydrate (87.9% creatine) or anything else.

Creatinine is the honesty line: creatine's standard degradation product forms with heat and moisture, and its level on the CoA reflects both process quality and storage history. The ≤0.5% cap mirrors what a good monohydrate CoA carries.

The magnesium is declarable: whatever the finished format, the magnesium content flows to the mineral declaration, so the per-serving arithmetic belongs in the label file from the first prototype.

Store like creatine: cool and dry, sealed — moisture is what drives the creatine→creatinine clock.

Effervescent and stick-pack behaviour: the citrate/phosphate components are buffer-active, so the complex participates in your effervescent acid-base arithmetic rather than sitting inert. Bench-test fizz kinetics with the real material — paper calculations miss it.