119902-17-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 119902-17-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,9,9,0 and 2 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 119902-17:
(8*1)+(7*1)+(6*9)+(5*9)+(4*0)+(3*2)+(2*1)+(1*7)=129
129 % 10 = 9
So 119902-17-9 is a valid CAS Registry Number.
InChI:InChI=1/C63H104O23/c1-30-51(65)58(72-14)52(66)59(78-30)83-55-33(4)76-49(26-44(55)70-12)81-53-31(2)74-48(24-42(53)68-10)80-54-32(3)75-50(25-43(54)69-11)82-56-35(6)84-62(28-46(56)71-13)29-73-45-27-47(77-34(5)57(45)85-86-62)79-36(7)63(67)22-19-41-39-16-15-37-23-38(64)17-20-60(37,8)40(39)18-21-61(41,63)9/h15,30-36,38-59,64-67H,16-29H2,1-14H3
119902-17-9Relevant articles and documents
Structural revision of periplocosides and periperoxides, natural immunosuppressive agents from the genus Periploca
Wang, Luo-Yi,Chen, Zhen-Hua,Zhou, Yu,Tang, Wei,Zuo, Jian-Ping,Zhao, Wei-Min
experimental part, p. 2230 - 2236 (2012/07/13)
The structures of a series of peroxy function containing pregnane glycosides isolated from Periploca sepium and Periploca forrestii were revised to be orthoester group bearing ones using 2D NMR spectroscopic techniques, as well as chemical transformations and X-ray crystallographic diffraction analysis. The orthoester function appears to be an essential structural feature for immunosuppressive activity.