686-21-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 686-21-5 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 6,8 and 6 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 686-21:
(5*6)+(4*8)+(3*6)+(2*2)+(1*1)=85
85 % 10 = 5
So 686-21-5 is a valid CAS Registry Number.
686-21-5Relevant articles and documents
MECHANISM OF LEVULINIC ACID FORMATION
Horvat, Jaroslav,Klaic, Branimir,Metelko, Biserka,Sunjic, Vitomir
, p. 2111 - 2114 (2007/10/02)
Based on the intermediates revealed by (13)C-NMR spectroscopy, the mechanism of levulinic acid (6) formation in acid catalysed hydrolysis of 2-hydroxymethylfuran-2-carbaldehyde (14) is proposed.