3644-74-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 3644-74-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,6,4 and 4 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 3644-74:
(6*3)+(5*6)+(4*4)+(3*4)+(2*7)+(1*4)=94
94 % 10 = 4
So 3644-74-4 is a valid CAS Registry Number.
InChI:InChI=1/C14H16O3/c15-12-7-4-9-14(12,10-8-13(16)17)11-5-2-1-3-6-11/h1-3,5-6H,4,7-10H2,(H,16,17)
3644-74-4Relevant academic research and scientific papers
HEXAHYDROINDOLES AND TETRAHYDRO-1H-1-PYRINDINES: ALTERNATIVE FORMATION FROM 5-CARBOXAMIDOPENTANOIC ACIDS AND PROOF OF STRUCTURES
Metz, Gunter
, p. 4101 - 4124 (2007/10/02)
Under mild temperatures the 3-acetyl-3-aryl-5-carboxamidopentanoic acids 1 (Ar=phenyl or dimethoxyphenyl) easily undergo cyclisation in sulfuric acid or polyphosphoric acid (PPA) to the bicyclic lactamlactones 2.Surprisingly different lactams were obtaine
