185203-69-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 185203-69-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,5,2,0 and 3 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 185203-69:
(8*1)+(7*8)+(6*5)+(5*2)+(4*0)+(3*3)+(2*6)+(1*9)=134
134 % 10 = 4
So 185203-69-4 is a valid CAS Registry Number.
185203-69-4Relevant academic research and scientific papers
Anti aldol reactions of α-alkoxymethyl ketones: Application to the total synthesis of (+)-restricticin
Paterson, Ian,Nowak, Thorsten
, p. 8243 - 8246 (2007/10/03)
The antifungal agent (+)-restricticin (1) was prepared in 12 steps from ketone (S)-8. The key steps are (i) the boron-mediated anti aldol reaction of (S)-8 with 9 to give 13 and (ii) the cyclisation reaction 4 → 15.
