74057-55-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 74057-55-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,4,0,5 and 7 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 74057-55:
(7*7)+(6*4)+(5*0)+(4*5)+(3*7)+(2*5)+(1*5)=129
129 % 10 = 9
So 74057-55-9 is a valid CAS Registry Number.
74057-55-9Relevant academic research and scientific papers
Synthesis of flavones having a methyl substituent at 5- or 4'-position
Bhat, V S,Joshi, V S
, p. 976 - 977 (2007/10/02)
7-Methoxy-5-methyl-2-(4-methylphenyl)-4-H-1-benzopyran-4-one (11), 7-methoxy-5-methyl-2-phenyl-4H-1-benzopyran-4-one (12) and 7-methoxy-5-methyl-2-(3,4-methylenedioxyphenyl)-4H-1-benzopyran-4-one (13) have been synthesised from 1-(2-hydroxy-4-methoxy-6-me
