22139-54-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 22139-54-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,2,1,3 and 9 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 22139-54:
(7*2)+(6*2)+(5*1)+(4*3)+(3*9)+(2*5)+(1*4)=84
84 % 10 = 4
So 22139-54-4 is a valid CAS Registry Number.
22139-54-4Relevant academic research and scientific papers
First efficient synthesis of (±)-erythro-roccellic acid
Mangaleswaran,Argade
, p. 1764 - 1766 (2007/10/03)
An easy, four-step route to (±)-erythro-2-dodecyl-3-methylbutanedioic acid (roccellic acid, 9) with 60% overall yield has been described. Wittig reaction of the citraconimide-TPP adduct with dodecanal furnished the mixture of (E)- and (Z)-isomers 3 and 4,
