142998-43-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 142998-43-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,2,9,9 and 8 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 142998-43:
(8*1)+(7*4)+(6*2)+(5*9)+(4*9)+(3*8)+(2*4)+(1*3)=164
164 % 10 = 4
So 142998-43-4 is a valid CAS Registry Number.
142998-43-4Relevant articles and documents
Towards the synthesis of the skeleton of salvianolic acid D
Queffelec, Clemence,Bailly, Fabrice,Cotelle, Philippe
, p. 768 - 770 (2007/10/03)
A successful synthesis of the acid part of salvianolic acid D is described (eight steps from isovanillin, 22% overall yield). The benzaldehyde key intermediate was obtained in six steps in 52% overall yield and was converted into the trimethylated precurs