BOC-D-asparagine product alias: N-tert-butoxycarbonyl-D-asparagine Boc-D-asparagine Nalpha- (tert-Butoxycarbonyl) -D-asparagine Nalpha-BOC-D-Asparagine Nalpha-BOC-D -Asn-OH CAS: 75647-01-7 MDL: MFCD00065558 EINECS: BOC-D-asparagine Beilstein: 4843040 Molecular formula: C19H18N2O5 Molecular weight: 232.2 Properties [α] 20D: 7.7 ° (C = 1, DMF) Remarks: Above The description is for reference only and does not mean that the product you received is completely consistent with this description. For the factory standard of the product, please refer to the quality standard. Quality Appearance Appearance white powder or crystalline infrared spectrum identification Infrared spectrometry and control match Purity ≥98.0% (HPLC) Purity ≥98.0% (neutralization titration) Specific rotation Specific rotation [a] 20 / D + 6.3 ° ～ + 8.3 ° (C = 1, DMF) Storage and storage temperature 2-8 ° C BOC-D-asparagine
Hourglass is also called a sand clock, a device for measuring time. The hourglass consists of two glass balls and a narrow connecting pipe. The time is measured by the time it takes for a glass ball filled with sand to flow through the narrow tube into the bottom glass ball. We have 1 minute, 3 minutes, 10 minutes of hourglass, and can be ordered as requested.
Sand Timer
Sand Timer,Plastic Colorful Sand Timer,1 Minute Sand Timer,2 Minute Sand Timer
Yangzhou Special Care Daily Products Co., Ltd , http://www.justspecialcare.com