58-55-9 Theophylline

?????? ?? ???	Theophylline
???????? ???	Theophylline; Theophylline anhydrous; 1,3-dimethyl-3,4,5,7-tetrahydro-1H-purine-2,6-dione; dimethylxanthine; ANHYDROUS THEOPHYLLINE
????? ????????	C₇H₁₀N₄O₂
?????? ???	182.1799
InChI	InChI=1/C7H10N4O2/c1-10-5-4(8-3-9-5)6(12)11(2)7(10)13/h3-5H,1-2H3,(H,8,9)
??? ??????? ??????	58-55-9
EINECS	200-385-7
????? ??????
?????	1.62g/cm³
??????	270-274℃
????? ?? ???	390.1°C at 760 mmHg
??????? ???????	1.737
????? ???????	189.7°C
???? ?? ???????	8.3 g/L (20℃)
????? ?? ????	2.72E-06mmHg at 25°C
???? ??????	Xn:Harmful;
???? ?? ???	R22:;
??????? ?????

Chemicals Suppliers(53):: 1Dragon Chemical Group Co.,China; 2Nantong Bestime Chemical Co.,Ltd.; 3CIDIC Co.,Ltd.; 4AFINE CHEMICALS LIMITED; 5Chongqing Perfect Import & Export Co., Ltd.; 6Nantong Chem-Tech. Co.,Ltd; 7EASYBUYER LTD.,; 8Shijiazhuang Bojing LCD Materials Co., Ltd.; 9Hangzhou Dingyanchem Co.,Ltd; 10Cambridge Isotope; Contact Suppliers; Post Buying Leads; Related selling offers

潘金莲被吸乳揉到高潮的视频,久久99久久99精品免观看,在电影院里拨开内裤挺进,护士交换粗吟配乱大交动态图