76093-21-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 76093-21-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,6,0,9 and 3 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 76093-21:
(7*7)+(6*6)+(5*0)+(4*9)+(3*3)+(2*2)+(1*1)=135
135 % 10 = 5
So 76093-21-5 is a valid CAS Registry Number.
76093-21-5Relevant articles and documents
The Synthesis of 1-Chloroxanthone and Related Dichloroxanthones
Okabayashi, Ichizo,Iwata, Noriko
, p. 2831 - 2835 (2007/10/02)
1-Chloroxanthone (2) was obtained by cyclization of 2-chloro-6-phenoxybenzoic acid (10) prepared from 2-nitro-6-phenoxybenzoic acid (8) via 2-amino-6-phenoxybenzoic acid (9).Similarly, 1,5-dichloroxanthone (14a) and 1,7-dichloroxanthone (14b) were obtaine