137109-38-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 137109-38-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,1,0 and 9 respectively; the second part has 2 digits, 3 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 137109-38:
(8*1)+(7*3)+(6*7)+(5*1)+(4*0)+(3*9)+(2*3)+(1*8)=117
117 % 10 = 7
So 137109-38-7 is a valid CAS Registry Number.
137109-38-7Relevant 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
