눈에 묻으면 몇 분간 물로 조심해서 씻으시오. 가능하면 콘택트렌즈를 제거하시오. 계속 씻으시오.
P321
(…) 처치를 하시오.
P332+P313
피부 자극이 생기면 의학적인 조치· 조언을 구하시오.
P362
오염된 의복을 벗고 세척 후에 재사용하기
NFPA 704
1
0
0
GLYCINE ANHYDRIDE C화학적 특성, 용도, 생산
화학적 성질
white to slightly yellow crystalline powder
용도
2,5-Piperazinedione, can be used as an intermediate in the preparation of various pharmaceutical and biologically active compounds. It can be used in the synthesis of dipeptide isosteres by cross-metathesis.
정의
ChEBI: A cyclic peptide that is piperazine in which the hydrogens at positions 2 and 5 are replaced by oxo groups.
Purification Methods
Recrystallise glycine anhydride from H2O (plates) and it can be sublimed (slowly) at 260o or at 140-170o/0.5mm. The dihydrochloride has m 129-130o and is prepared by dissolving it in conc HCl and adding EtOH to crystallisation point; dry it in a vacuum. The bis-1-naphthylurethane has m 232o(dec), and the diperchlorate has m 117o (hygroscopic). [MS: Johnstone J Chem Soc, Perkin Trans 1 1297 1975, NMR: Blaha & Samek Collect Czech Chem Commun 32 3780 1967, Sauborn J Phys Chem 36 179 1932, Corey J Am Chem Soc 60 1599 1938, Beilstein 24 IV 1070.]
