88470-02-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 88470-02-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,8,4,7 and 0 respectively; the second part has 2 digits, 0 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 88470-02:
(7*8)+(6*8)+(5*4)+(4*7)+(3*0)+(2*0)+(1*2)=154
154 % 10 = 4
So 88470-02-4 is a valid CAS Registry Number.
88470-02-4Relevant articles and documents
2-Aminomethyl-3-hydroxy-1-thiochromones; Preparation and Reactions
Eiden, Fritz,Felbermeir, Gerda
, p. 1034 - 1041 (1983)
3-Hydroxy-1-thiochromone (3a) reacts with formaldehyde and amines to yield the title compounds 5a-5h.Heating of 5a results in the formation of the spiro compound 9.Addition of the enamines 11 or 12 leads to the pyranothiochromones 15a or 14.