221876-44-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 221876-44-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,1,8,7 and 6 respectively; the second part has 2 digits, 4 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 221876-44:
(8*2)+(7*2)+(6*1)+(5*8)+(4*7)+(3*6)+(2*4)+(1*4)=134
134 % 10 = 4
So 221876-44-4 is a valid CAS Registry Number.
221876-44-4Relevant academic research and scientific papers
Preparation of pure enantiomeric 3-oxa-2,7-diazabicyclo[3.3.0]octanes and their conversion to other bicyclic ring-systems
Aurich, Hans Günter,Soeberdt, Michael
, p. 87 - 95 (2007/10/03)
Pure Enantiomeric (S)-N-benzylalaninol (R1 = Me) and (S)-N-benzylvalinol (R1 = i-Pr) were allylated with Br-CH2-CH=CR2R3 (R2 = R3 = H; R2 = Ph, R3 = H; Rsu
