d-pyroglutamic acid 4042-36-8

Date：2021-12-01 Categories：Related Application Product

post date:

nov 30,2021

expiry date:

nov 30,2022

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%

cas registry number:	4042-36-8
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 formula:	c₅h₇no₃
molecular weight:	129.114
molecular structure:
hazard symbols:	xi:irritant;
risk codes:	r36/37/38:;
safety description:	s26:; s37/39:;

Tags：D-Pyroglutamic acid 4042-36-8