138802-18-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 138802-18-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,8,0 and 2 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 138802-18:
(8*1)+(7*3)+(6*8)+(5*8)+(4*0)+(3*2)+(2*1)+(1*8)=133
133 % 10 = 3
So 138802-18-3 is a valid CAS Registry Number.
138802-18-3Relevant academic research and scientific papers
On the reversal of the stereoselectivity in the Evans aldol reaction of α-amino aldehydes
Hayashi,Hamada,Shioiri
, p. 7287 - 7290 (2007/10/02)
Reversal of the stereoselectivity in the Evans aldol reaction of Boc-(S)-prolinal (3), observed during the total synthesis of dolastatin 10 (1), was proved to be due to the amounts of dibutylboron triflate and triethylamine. (R)-Alaninal derivatives (14)
