73453-39-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 73453-39-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,3,4,5 and 3 respectively; the second part has 2 digits, 3 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 73453-39:
(7*7)+(6*3)+(5*4)+(4*5)+(3*3)+(2*3)+(1*9)=131
131 % 10 = 1
So 73453-39-1 is a valid CAS Registry Number.
73453-39-1Relevant articles and documents
Synthesis and Reactions of (4H- and 2H-2,6-Diphenylthiopyran-4-yl)phosphonates
Chen, Chin H.,Reynolds, George A.
, p. 2453 - 2458 (2007/10/02)
The umpolung of 2,6-diphenylthiopyrylium salts is achieved by the synthesis of the Wittig-Horner reagent of diethyl (2,6-diphenyl-4H-thiopyran-4-yl)phosphonate (7).This 4H-lithiated species is a kinetically controlled product which equilibrates to the mor
