Alpha-GPC / Alpha GPC / choline alfoscerate / 28319-77-9 CAS NO.28319-77-9

test items

specification

description

white powder,

neutral odor, very highly hygroscopic.

identification(nmr)

conforms to the standard

solubility(h₂o, 10% w/v)

clear

bulk density (untapped)

0.90g/cm³~1.08g/cm³

stability

dry and light protected storage;

stable under normal usage.

color of solution

≤y7

water content

≤2.0%

ph

7.5~9.0

specific rotation[α]²⁵_d

-2.4^o~2.95^o

related substances (hplc)

g.p.e. :<0.2%

glycerophosric acid: <0.2%

related substances(tlc)

single spot

purity(by titration)

l-α-glycerophosphoryl choline

≥99.0%

solvents residue(ethanols)

≤1.0%

test items

specification

characteristics

colorless, clear, viscous liquid

identification

tlc: standard solution and test solution

same spot, rf

specific rotation[α]²⁵_d

-2.4^o~2.80^o

heavy metals(as pb)

≤10ppm

sulfate

≤0.02%

chloride(cl)

≤0.02%

phosphate ion

the color of solution should not stronger

than the control solution(5ppm)

ph

5.0~7.0

water determination

14.0%~16.0%

assay(anhydrous basis)

98.0%~102.0%