187268-00-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 187268-00-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,7,2,6 and 8 respectively; the second part has 2 digits, 0 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 187268-00:
(8*1)+(7*8)+(6*7)+(5*2)+(4*6)+(3*8)+(2*0)+(1*0)=164
164 % 10 = 4
So 187268-00-4 is a valid CAS Registry Number.
187268-00-4Relevant articles and documents
Isomerization of 4-aminobenzofurans to 4-hydroxyindoles
Chilin,Rodighiero,Guiotto
, p. 309 - 312 (2007/10/03)
4-Amino-2-methylbenzofurans are quantitatively converted to 4-hydroxy- 2-methylindoles in acidic medium. The rearrangement mechanism involves the ring opening of the furan ring to produce an intermediate carbocation, which undergoes ring clo- sure to the