194720-02-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 194720-02-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,4,7,2 and 0 respectively; the second part has 2 digits, 0 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 194720-02:
(8*1)+(7*9)+(6*4)+(5*7)+(4*2)+(3*0)+(2*0)+(1*2)=140
140 % 10 = 0
So 194720-02-0 is a valid CAS Registry Number.
194720-02-0Relevant articles and documents
Specific C-C Bond Construction by Remote C-H Activation: Synthesis of (-)-trans-Cembranolide
Taber, Douglass F.,Song, Ying
, p. 6603 - 6607 (1997)
The first total synthesis of (-)-trans-cembranolide (1), isolated from Sinularia mayi Luttschw., is described. The key step in the synthesis is the diastereoselective Rh-mediated cyclization of the enantiomerically pure diazo ester 4 to the tetrahydrofuran 3a.
