250783-22-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 250783-22-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,0,7,8 and 3 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 250783-22:
(8*2)+(7*5)+(6*0)+(5*7)+(4*8)+(3*3)+(2*2)+(1*2)=133
133 % 10 = 3
So 250783-22-3 is a valid CAS Registry Number.
250783-22-3Relevant academic research and scientific papers
Unusual oxaphosphoranes by acyl transfer from o-acetoxy- o'diphenylphosphanyltolane
Vedejs, Edwin,Steck, Peter L.
, p. 2788 - 2791 (2007/10/03)
A striking red color appears upon heating the colorless title compound 1 due to rearrangement to the oxaphosphorane 3. The initiating event in this transformation may involve intramolecular O-to-P acyl transfer to give 2, followed by P-to-C acyl transfer,
