309721-41-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 309721-41-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,0,9,7,2 and 1 respectively; the second part has 2 digits, 4 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 309721-41:
(8*3)+(7*0)+(6*9)+(5*7)+(4*2)+(3*1)+(2*4)+(1*1)=133
133 % 10 = 3
So 309721-41-3 is a valid CAS Registry Number.
309721-41-3Relevant academic research and scientific papers
Stereoselective synthesis of (2R, 3R)- and (2S, 3S)-2-(4-hydroxyphenyl)-3-hydroxymethyl-1,4-benzodioxan-6-carbaldehyde
Gu,Chen,Jing,Pan
, p. 397 - 399 (2007/10/03)
A novel stereoselective synthetic approach to 1,4-benzodioxane lignans was reported in which (2R, 3R)- and (2D, 3S)-2-(4-hydroxyphenyl)-3-hydroxymethyl-1,4-benzodioxan-6-carbaldehyde were first synthesised.
