898552-17-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 898552-17-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,9,8,5,5 and 2 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 898552-17:
(8*8)+(7*9)+(6*8)+(5*5)+(4*5)+(3*2)+(2*1)+(1*7)=235
235 % 10 = 5
So 898552-17-5 is a valid CAS Registry Number.
898552-17-5Relevant academic research and scientific papers
Synthesis of the ABC and IJ ring fragments of yessotoxin
Oishi, Tohru,Suzuki, Miho,Watanabe, Koji,Murata, Michio
, p. 3975 - 3978 (2007/10/03)
Synthesis of a 6/6/6 tricyclic ether system (3) corresponding to the ABC ring fragment of yessotoxin (1) has been achieved via coupling of a triflate and a 2-lithiofuran followed by intramolecular hetero-Michael addition. The IJ ring fragment (4) of 1 was
