188404-01-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 188404-01-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,8,4,0 and 4 respectively; the second part has 2 digits, 0 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 188404-01:
(8*1)+(7*8)+(6*8)+(5*4)+(4*0)+(3*4)+(2*0)+(1*1)=145
145 % 10 = 5
So 188404-01-5 is a valid CAS Registry Number.
188404-01-5Relevant articles and documents
An expeditious synthesis of (2R,3S)-3-tert-butoxycarbonylamino-1-isobutylamino-4-phenyl-2-butanol, a key building block of HIV protease inhibitors
Shibata, Norio,Katoh, Tadashi,Terashima, Shiro
, p. 619 - 620 (2007/10/03)
The title synthesis was achieved by the diastereoselective addition of an anion produced from N-nitroso-N-methylisobutylamine with (S)-2-N,N-dibenzylamino-3-phenylpropanal as a key step.