918305-07-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 918305-07-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,1,8,3,0 and 5 respectively; the second part has 2 digits, 0 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 918305-07:
(8*9)+(7*1)+(6*8)+(5*3)+(4*0)+(3*5)+(2*0)+(1*7)=164
164 % 10 = 4
So 918305-07-4 is a valid CAS Registry Number.
918305-07-4Relevant articles and documents
Synthetic studies toward diazonamide A. Preparation of the benzofuranone-indolyloxazole fragment
Wipf, Peter,Yokokawa, Fumiaki
, p. 2223 - 2226 (1998)
The benzofuranone-indolyloxazole fragment of the polycyclic marine natural product diazonamide A was prepared from tryptamine. The oxazole ring was synthesized from an α keto-indole via cyclodehydration with Ph3P/Cl3CCCl3,
