D-Pyroglutamic acid 4042-36-8
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Post Date:
Jan 01,2025
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Expiry Date:
Jan 01,2026
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Detailed Description:
Cas No. :4042-36-8
Payment Method: T/T
Appearance
White crystals with lumps
Specific rotation[α]D/20
(C=2 in H2O)
+10.8°to +12.3°
Melting Point (ºC)
160 to 163 ºC
Chloride(C1)
Not more than 0.02%
Iron(Fe)
Not more than 10ppm
Heavy metals(Pb)
Not more than 10ppm
Arsenic(As2O3)
Not more than 1ppm
Loss on drying
Not more than 0.20%
Residue on ignition
Not more than 0.10%
Assay
98.0%¡«101.0%
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CAS Registry Number:
4042-36-8
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Synonyms:
;D-5-Pyrrolidone-2-carboxylic acid;D-Pyroglutamic acid;(R)-(+)-2-Pyrrolidinone-5-carboxylic acid;H-D-Pyr-OH;
;2-oxopyrrolidine-1-carboxylic acid;
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Molecular Formula:
C5H7NO3
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Molecular Weight:
129.114
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Molecular Structure:
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Hazard Symbols:
Xi:Irritant;
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Risk Codes:
R36/37/38:;
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Safety Description:
S26:;
S37/39:;
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