165901-23-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 165901-23-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,5,9,0 and 1 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 165901-23:
(8*1)+(7*6)+(6*5)+(5*9)+(4*0)+(3*1)+(2*2)+(1*3)=135
135 % 10 = 5
So 165901-23-5 is a valid CAS Registry Number.
165901-23-5Relevant articles and documents
A CONVENIENT SYNTHESIS OF PYRIDOBENZOTHIAZINE DERIVATIVES VIA OXIDATIVE RING CLOSURE OF 3-SUBSTITUTED 6-AMINOPYRIDINES
Chern, Ji-Wang,Wu, Kuo-Rong
, p. 461 - 470 (2007/10/02)
3-Substituted pyridobenzothiazines were prepared either by heating the disulfide derivatives, which were obtained by a treatment of 3-substituted 6-aminopyridines with diethyl azodicarboxylate (DEAD) or NBS in DMF at room