40738-40-7 Usage
Definition
ChEBI: An aromatic heptaketide produced by rhubarb (Rheum palmatum, Polygonaceae).
Check Digit Verification of cas no
The CAS Registry Mumber 40738-40-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,0,7,3 and 8 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 40738-40:
(7*4)+(6*0)+(5*7)+(4*3)+(3*8)+(2*4)+(1*0)=107
107 % 10 = 7
So 40738-40-7 is a valid CAS Registry Number.
40738-40-7Relevant academic research and scientific papers
SYNTHESIS OF NATURALLY OCCURRING 2,5-DIALKYLCHROMONES. PART 1. SYNTHESIS OF ALOESONE AND ALOESOL
Gramatica, Paola,Gianotti, M. Pia,Speranza, Giovanna,Manitto, Paolo
, p. 743 - 750 (2007/10/02)
A number of 2-alkyl-7-alkoxy ( or hydroxy)-5-methyl-chromones, including naturally occurring aloesone and aloesol, were synthesized starting from ethyl orsellinate via β-keto-sulfoxides as intermediates.
