137279-73-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 137279-73-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,2,7 and 9 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 137279-73:
(8*1)+(7*3)+(6*7)+(5*2)+(4*7)+(3*9)+(2*7)+(1*3)=153
153 % 10 = 3
So 137279-73-3 is a valid CAS Registry Number.
137279-73-3Relevant academic research and scientific papers
Synthesis of Novel c-Hetero-fused Thiophene Derivatives
Rangnekar, D. W.,Mavlankar, S. V.
, p. 1449 - 1451 (2007/10/02)
An efficient synthesis of novel 5-(4-nitrophenyl)-2-benzoxazol-2-yl-c-hetero-fused thiophenes was achieved by the condensation of 5-(4-nitrophenyl)-2-benzoxazol-2-yl-3,4-dichlorothiophene with ethylene glycol, ethylendiamine, substituted thioamides and 2-
