132643-66-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 132643-66-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,2,6,4 and 3 respectively; the second part has 2 digits, 6 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 132643-66:
(8*1)+(7*3)+(6*2)+(5*6)+(4*4)+(3*3)+(2*6)+(1*6)=114
114 % 10 = 4
So 132643-66-4 is a valid CAS Registry Number.
132643-66-4Relevant articles and documents
REACTION OF PYRIDAZINE N-OXIDES WITH PYRIDINES: FORMATION OF THE FIRST EXAMPLES OF PYRIDO-OXEPINS
Kurita, Jyoji,Kakusawa, Naoki,Yasuike, Shuji,Tsuchiya, Takashi
, p. 1937 - 1940 (2007/10/02)
Reaction of pyridazine N-oxides (3) with pyridines and quinolynes (2) gave the corresponding novel fuly unsaturated pyrido-oxepins (4-6) and quino-oxepins (13-15) via the cycloadducts (11).