177213-44-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 177213-44-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,7,2,1 and 3 respectively; the second part has 2 digits, 4 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 177213-44:
(8*1)+(7*7)+(6*7)+(5*2)+(4*1)+(3*3)+(2*4)+(1*4)=134
134 % 10 = 4
So 177213-44-4 is a valid CAS Registry Number.
177213-44-4Relevant articles and documents
(Alkoxyallyl)sulfones as enal β-anion equivalents. Synthesis of 5-substituted 2(5H)-furanones
Craig, Donald,Etheridge, Christopher J.,Smith, Alison M.
, p. 15267 - 15288 (1996)
2(5H)-Furanones 14 may be prepared in a four-step sequence starting from (alkoxyallyl)sulfone 10 and aldehydes.
