成人黄色在线观看视频,一级毛片高清免费视频,在线自摸视频网址,一级毛片免费观看不卡的,亚洲日韩日本中文在线,看免费a级乱伦毛片视频,人人摸日日干天天操

在線客服
掃一掃加關(guān)注 掃一掃加關(guān)注
24-Hour Hotline
13319106789 15389404674 15091427713 13399202550
Sheep placental hormone
發(fā)布時(shí)間:2021/4/14      點(diǎn)擊數(shù):3133

The molecular weight of the peptide is less than 500 Dalton

Physical and chemical properties

Water solubility: the solubility is more than 90%, the water solution is clear and transparent, pH 4.5 ± 0.3, there is a trace of white particle precipitation, which is insoluble peptide substance.

Stability: it is stable in acid, alkali and high temperature, and can withstand heat resistance test at 100 ℃ for 30min or 121 ℃ for 20min in the range of ph2-10.

For more details about this product, please call our customer service!