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H-Pyr-OH (L-Pyroglutamic acid) |
is a Star Product of
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| General information |
| Registration name: H-Pyr-OH (L-Pyroglutamic acid) |
Other product names:
(S)-2-Pyrrolidone-5-carboxylic acid
(S)-(-)-2-Pyrrolidinone-5-carboxylic acid
H-L-Pyr-OH
Pyr-OH
H-Pyr-OH
L-Pyroglutamic acid
L-5-Oxo-pyrrolidine carboxylic acid
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| CAS number 98-79-3 |
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| EINECS: 202-700-3 |
| Formula: C5H7NO3 |
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| Detailed information on the Star Product |
| Appearance: | White crystalline powder
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| Specific rotation(a)D20 (C=5 H2O): | -11.0 to -12.0º
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| Chloride(C1): | Not more than 0.02%
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| Ammonium(NH4): | Not more than 0.02%
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| Sulfate(SO4): | Not more than 0.02%
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| Heavy metals(Pb): | Not more than 10ppm
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| Iron(Fe): | Not more than 10ppm
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| Arsenic(As2O3): | Not more than 1 PPM
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| Loss on drying: | Not more than 0.5%
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| Residue on ignition: | Not more than 0.1%
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| Assay: | 99.0-101.0% |
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