664993-19-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 664993-19-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,6,4,9,9 and 3 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 664993-19:
(8*6)+(7*6)+(6*4)+(5*9)+(4*9)+(3*3)+(2*1)+(1*9)=215
215 % 10 = 5
So 664993-19-5 is a valid CAS Registry Number.
664993-19-5Relevant academic research and scientific papers
Synthesis of new biheterocycles containing a 1,4-benzodioxane fragment
Avakyan,Vartanyan,Sargsyan,Markaryan
, p. 434 - 438 (2014/06/09)
The reaction of 1,4-benzodioxane-2-carbonyl chloride with 5-(4-aminophenyl)-1,3,4-oxa- and -thiadiazole-2-thiols afforded new biheterocyclic compounds which were converted into the corresponding S-benzyl derivatives by treatment with benzyl chloride. 5-(4
