137279-67-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 137279-67-5 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, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 137279-67:
(8*1)+(7*3)+(6*7)+(5*2)+(4*7)+(3*9)+(2*6)+(1*7)=155
155 % 10 = 5
So 137279-67-5 is a valid CAS Registry Number.
137279-67-5Relevant 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-
