491-66-7 Usage
Definition
ChEBI: A dihydroxyflavanone that is (2S)-flavanone substituted by hydroxy groups at positions 5 and 7 and a methyl group at position 6 respectively.
Check Digit Verification of cas no
The CAS Registry Mumber 491-66-7 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 4,9 and 1 respectively; the second part has 2 digits, 6 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 491-66:
(5*4)+(4*9)+(3*1)+(2*6)+(1*6)=77
77 % 10 = 7
So 491-66-7 is a valid CAS Registry Number.
InChI:InChI=1/C16H14O4/c1-9-11(17)7-14-15(16(9)19)12(18)8-13(20-14)10-5-3-2-4-6-10/h2-7,13,17,19H,8H2,1H3/t13-/m0/s1
491-66-7Relevant articles and documents
Biomimetic synthesis of the flavanone leridol, revision of the structure of the natural product
Solladie, Guy,Gehrold, Nicolai,Maignan, Jean
, p. 2309 - 2314 (2007/10/03)
Two independent syntheses of 5-hydroxy-6-hydroxymethyl-7-methoxy-8- methylflavanone (1), which was supposed to be natural lendol, demonstrated that this structure assignment was wrong and that the natural flavanone lendol was indeed 5-hydroxy-8-hydroxymethyl-7-methoxy-6-methylflavanone (2).