159299-75-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 159299-75-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,9,2,9 and 9 respectively; the second part has 2 digits, 7 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 159299-75:
(8*1)+(7*5)+(6*9)+(5*2)+(4*9)+(3*9)+(2*7)+(1*5)=189
189 % 10 = 9
So 159299-75-9 is a valid CAS Registry Number.
159299-75-9Relevant academic research and scientific papers
Synthesis of optically active chalcogran from L-sorbose
Cubero,Lopez-Espinosa,Kari
, p. 231 - 242 (2007/10/02)
The synthesis of (2S,5RS)-2-ethyl-1,6-dioxaspiro[4,4]nonane (chalcogran) (1) from 2,3:4,6-di-O-isopropylidene-α-L-sorbofuranose (2) through elongation of the carbon chain at C-1 and C-6 by the Wittig and Corcy methodologies, respectively, spiroacetalation