144889-05-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 144889-05-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,4,8,8 and 9 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 144889-05:
(8*1)+(7*4)+(6*4)+(5*8)+(4*8)+(3*9)+(2*0)+(1*5)=164
164 % 10 = 4
So 144889-05-4 is a valid CAS Registry Number.
144889-05-4Relevant academic research and scientific papers
Formal syntheses of (±)-mesembrine and (±)-dihydromaritidine
Michael,Howard,Katz,Zwane
, p. 6023 - 6024 (2007/10/02)
Condensation of 3-arylated Δ1-pyrrolinium salts with t-butyl 3-oxopent-4-enoate 3 followed by treatment with trifluoroacetic acid yielded the alkaloid Δ7-mesembrenone 1 and its N-benzyl analogue 10. These compounds are intermediates
