74142-42-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 74142-42-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,4,1,4 and 2 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 74142-42:
(7*7)+(6*4)+(5*1)+(4*4)+(3*2)+(2*4)+(1*2)=110
110 % 10 = 0
So 74142-42-0 is a valid CAS Registry Number.
74142-42-0Relevant academic research and scientific papers
Stereochemistry of methylation of cyclic sulfonium ylides
Garbesi, Anna
, p. 547 - 550 (2007/10/02)
Low temperature methylation of 6-membered sulfonium ylides is highly stereoselective and configurational inversion has been established in at least one case. No appreciable stereoselectivity has been observed in 5-membered ylides.
