137068-84-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 137068-84-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,0,6 and 8 respectively; the second part has 2 digits, 8 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 137068-84:
(8*1)+(7*3)+(6*7)+(5*0)+(4*6)+(3*8)+(2*8)+(1*4)=139
139 % 10 = 9
So 137068-84-9 is a valid CAS Registry Number.
137068-84-9Relevant academic research and scientific papers
Vogt, Peter,Schlageter, Markus,Widmer, Erich
, p. 4115 - 4116 (1991)
Starting from (7E,9Z)-C15-aldehyde 4, the syntheses of (9Z, 11Z)-vitamin A acetate and palmitate are reported. The construction strategy is based on treatment of 4 with Zn-PPh3/CBr4, addition of acetaldehyde followed by a
