Overview
Creatine phosphate (phosphocreatine) is an organic compound that serves as a rapid energy reservoir in vertebrate muscle and brain tissues. It plays a pivotal role in the ATP-PCr energy system, providing immediate phosphate groups to regenerate ATP during high-intensity activities. First isolated in 1927, it has become clinically significant for treating conditions like heart failure and muscle atrophy. In sports science, it's valued for enhancing explosive power output. The compound is typically synthesized from creatine and phosphate donors under controlled conditions.
Physical and Chemical Properties
As a zwitterionic molecule, creatine phosphate exhibits high water solubility (approximately 50 g/L at 20°C) but poor stability in acidic conditions. Its crystalline form is stable when dry but gradually hydrolyzes in solution, especially at elevated temperatures or extreme pH levels. The compound's energy density stems from its high-energy phosphoanhydride bond (~10.3 kcal/mol). Spectroscopic analysis reveals characteristic IR absorption at 1250 cm−1 (P=O stretch) and 1100 cm−1 (P-O-C). Thermal decomposition occurs around 215°C without melting.
Main Applications
In medicine, creatine phosphate is administered intravenously as a cardioprotective agent during cardiac surgery and to treat myocardial ischemia. It's also used in neuromuscular disorders to improve muscle function. The sports supplement industry utilizes it in pre-workout formulations, though oral bioavailability remains debated. Research suggests potential cognitive benefits in neurodegenerative diseases. Industrial applications include cell culture media additives for energy-intensive bioprocesses.
Safety and Storage
While non-toxic (LD50 >5g/kg in rats), prolonged exposure to powder may cause respiratory irritation. Storage requires protection from moisture (hygroscopic) and temperatures above 25°C to prevent degradation into creatine and inorganic phosphate. Pharmaceutical-grade material must comply with USP/EP standards for heavy metals (<10ppm) and microbial counts. Transport regulations classify it as non-hazardous, though temperature-controlled shipping is recommended for bulk quantities.
B2B Procurement Guide
Industrial buyers should prioritize suppliers with cGMP certification for medical applications. Key specifications include: purity (≥98% by HPLC), residual solvent levels (methanol <3000ppm), and endotoxin content (<0.5 EU/mg for injectables). For research use, small-quantity vendors often provide more economical options. Bulk purchases (25kg+) typically offer 15-30% cost reductions. Audit suppliers for proper stability testing documentation and batch-to-batch consistency guarantees.
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