157034-40-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 157034-40-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,7,0,3 and 4 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 157034-40:
(8*1)+(7*5)+(6*7)+(5*0)+(4*3)+(3*4)+(2*4)+(1*0)=117
117 % 10 = 7
So 157034-40-7 is a valid CAS Registry Number.
157034-40-7Relevant academic research and scientific papers
New Dibenzofurans and Depsides from the Lichen Bunodophoron patagonicum
Elix, John A.,Venables, Debra A.,Wedin, Mats
, p. 1335 - 1344 (2007/10/02)
The lichen Bunodophoron patagonicum has been shown to contain five new dibenzofurans: ascomatic acid (3,7-dimethoxy-1,9-dimethyldibenzofuran-2-carboxylic acid) (2) and the corresponding methyl ester (3); 7-O-methylnorascomatic acid (3-hydroxy-7-methoxy-1,
