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- Details for D-Pyroglutamic acid
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D-Pyroglutamic acid
Category : Food and Feed additives/Food additives
CAS NO : 4042-36-8 EC NO : 223-735-0 MF : C5H7NO3 MW : 129.114 Specification : Standard :AJI/USP Product description : 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% 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; Molecular Structure : 
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