144692-19-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 144692-19-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,4,6,9 and 2 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 144692-19:
(8*1)+(7*4)+(6*4)+(5*6)+(4*9)+(3*2)+(2*1)+(1*9)=143
143 % 10 = 3
So 144692-19-3 is a valid CAS Registry Number.
144692-19-3Relevant articles and documents
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