131771-64-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 131771-64-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,1,7,7 and 1 respectively; the second part has 2 digits, 6 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 131771-64:
(8*1)+(7*3)+(6*1)+(5*7)+(4*7)+(3*1)+(2*6)+(1*4)=117
117 % 10 = 7
So 131771-64-7 is a valid CAS Registry Number.
131771-64-7Relevant academic research and scientific papers
A Convenient Synthesis of Pyranoid Ene Lactones from Phenyl Glycosyl Sulfones
Qiu, Dongxu,Schmidt, Richard R.
, p. 875 - 877 (2007/10/02)
O-Benzyl protected pyranoid ene lactones (5,6-dihydro-2H-pyran-2-ones) 4a-c, 8 were obtained in high yield in a two-step procedure.Treatment of the phenyl glycosyl sulfones 2a-d, 6, which were readily prepared from their corresponding sulfides, with lithi
