87423-04-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 87423-04-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,7,4,2 and 3 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 87423-04:
(7*8)+(6*7)+(5*4)+(4*2)+(3*3)+(2*0)+(1*4)=139
139 % 10 = 9
So 87423-04-9 is a valid CAS Registry Number.
87423-04-9Relevant articles and documents
CONDENSED HETEROCYCLES WITH A THIAZOLE RING. 7. THIAZOLOTHIAZOLOPYRIMIDINES
Mikitenko, E. K.,Romanov, N. N.
, p. 754 - 756 (2007/10/02)
The condensation of 4-amino-2-methylthio-5-phenylthiazolium benzenesulfonate with 2-oxo-5-formyl-4-chloro-4-thiazoline gave a salt of a previously unknown three-ring heterosystem, which was used for the synthesis of thia- and 4-quinomonomethylidynecyanine
