23733-89-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 23733-89-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,3,7,3 and 3 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 23733-89:
(7*2)+(6*3)+(5*7)+(4*3)+(3*3)+(2*8)+(1*9)=113
113 % 10 = 3
So 23733-89-3 is a valid CAS Registry Number.
23733-89-3Relevant academic research and scientific papers
RING CLEAVAGE AND RECONSTRUCTION OF FIVE AND SIX MEMBERED RING
Suemune, Hiroshi,Oda, Kozo,Sakai, Kiyoshi
, p. 3373 - 3376 (2007/10/02)
Under the acetalization conditions using BF3-etherate/ethylene glycol, cyclopentanones and cyclohexanones with the carbonyl function at the C3- or C4-position of the β-side chain undergo the facile ring cleavage to reconstruct the new ring.
