178912-17-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 178912-17-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,8,9,1 and 2 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 178912-17:
(8*1)+(7*7)+(6*8)+(5*9)+(4*1)+(3*2)+(2*1)+(1*7)=169
169 % 10 = 9
So 178912-17-9 is a valid CAS Registry Number.
178912-17-9Relevant academic research and scientific papers
Stereoselective synthesis of ABC-ring system of hemibrevetoxin B
Matsukura, Hiroko,Morimoto, Masamichi,Nakata, Tadashi
, p. 487 - 488 (2007/10/03)
The 6, 6, 7-membered tricyclic ether ring system (ABC-ring) of hemibrevetoxin B was stereoselectively synthesized. The crucial steps in the present synthesis involve the ring expansion of tetrahydropyran to oxepane, 6-endo cyclization of epoxy alcohol, an
