134639-13-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 134639-13-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,4,6,3 and 9 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 134639-13:
(8*1)+(7*3)+(6*4)+(5*6)+(4*3)+(3*9)+(2*1)+(1*3)=127
127 % 10 = 7
So 134639-13-7 is a valid CAS Registry Number.
134639-13-7Relevant academic research and scientific papers
Bertounesque,Florent,Monneret
, p. 270 - 272 (1991)
A synthesis of 4-demethoxyfeudomycinone C is described from the anthraquinone approach utilizing the carbon framework of (3R,5S)-3-hydroxy-5-hydroxymethyl-3-methyl-2-oxotetrahydrofuran. The latter is easily derived from α-D-isosaccharinic acid.
