shanxiyuhong(expird)
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Business Type:Trading Company
CAS NO.28319-77-9
alpha-gpc
l-alpha-glycerophosphocholine
specification(l-alpha-gpc powder, anhydrous)
|
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]25d |
-2.4o~2.95o |
|
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% |
specification(l-alpha-gpc liquid)
|
test items |
specification |
|
characteristics |
colorless, clear, viscous liquid |
|
identification |
tlc: standard solution and test solution same spot, rf |
|
specific rotation[α]25d |
-2.4o~2.80o |
|
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% |