404936-45-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 404936-45-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,0,4,9,3 and 6 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 404936-45:
(8*4)+(7*0)+(6*4)+(5*9)+(4*3)+(3*6)+(2*4)+(1*5)=144
144 % 10 = 4
So 404936-45-4 is a valid CAS Registry Number.
404936-45-4Relevant academic research and scientific papers
Synthesis of the core structure of apicularen a by transannular cyclization.
Kuehnert, Sven M,Maier, Martin E
, p. 643 - 646 (2007/10/03)
[reaction: see text] An approach to the macrocyclic core of apicularen A is described. Thus, cross-coupling of the aryl triflate 7 with the vinylstannane 19 provided the styrene 20. Deprotection led to the dihydroxy acid 22. Through a size-selective macro
