250580-64-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 250580-64-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,0,5,8 and 0 respectively; the second part has 2 digits, 6 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 250580-64:
(8*2)+(7*5)+(6*0)+(5*5)+(4*8)+(3*0)+(2*6)+(1*4)=124
124 % 10 = 4
So 250580-64-4 is a valid CAS Registry Number.
250580-64-4Relevant articles and documents
[1 + 4]cycloaddition of isocyanides with 2-acetyl-1,4-benzoquinone; a convenient synthesis of isobenzofuran-4,7-quinones
Shaabani, Ahmad,Ajabi, Shahram,Farrokhzad, Farhad,Bijanzadeh, Hamid Reza
, p. 582 - 583 (1999)
Isocyanides undergo formal [1 +4]cycloaddition with 2-acetyl-1,4- benzoquinone to afford isobenzofuran-4,7-quinone derivatives.