5444-47-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 5444-47-3 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,4,4 and 4 respectively; the second part has 2 digits, 4 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 5444-47:
(6*5)+(5*4)+(4*4)+(3*4)+(2*4)+(1*7)=93
93 % 10 = 3
So 5444-47-3 is a valid CAS Registry Number.
InChI:InChI=1/C11H8N4O2/c16-10-8-9(13-11(17)14-10)15(6-12-8)7-4-2-1-3-5-7/h1-6H,(H2,13,14,16,17)
5444-47-3Relevant articles and documents
SYNTHESIS OF CROWN-CONTAINING XANTHINE DERIVATIVES
Ivanov, E. I.,Polishchuk, A. A.,Kalayanov, G. D.
, p. 1074 - 1078 (1992)
A number of new derivatives of xanthine, hypoxanthine, theophylline, and theobromine containing crown-ether substituents at the nitrogen atoms of the imidazole or pyrimidine nucleus was synthesized.