134307-04-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 134307-04-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,4,3,0 and 7 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 134307-04:
(8*1)+(7*3)+(6*4)+(5*3)+(4*0)+(3*7)+(2*0)+(1*4)=93
93 % 10 = 3
So 134307-04-3 is a valid CAS Registry Number.
134307-04-3Relevant articles and documents
Dual reactivity of diazonium salts derived from 1-amino-2-ethynyl-9,10- anthraquinones
Vasilevsky,Stepanov,Fadeev
, p. 2088 - 2095 (2013/10/01)
Diazotization of vicinal 1-amino-2-ethynyl-4-R-9,10-anthraquinones followed by a reaction with NaN3 gave 5-hydroxy-3-R-1H-naphtho[2,3-g] indazole-6,11-diones or 3-ethynyl-5-R-6H-anthra[1,9-cd]isoxazol-6-ones, depending on the substituents at th