142645-70-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 142645-70-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,2,6,4 and 5 respectively; the second part has 2 digits, 7 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 142645-70:
(8*1)+(7*4)+(6*2)+(5*6)+(4*4)+(3*5)+(2*7)+(1*0)=123
123 % 10 = 3
So 142645-70-3 is a valid CAS Registry Number.
142645-70-3Relevant articles and documents
Synthesis of 2,19-Bridged Androstenediones
Burkhart, Joseph P.,Huber, Edward W.,Laskovics, F. Mark,Peet, Norton P.
, p. 5150 - 5154 (2007/10/02)
The syntheses of 2,19-(methyleneoxy)androst-4-ene-3,17-dione (4a), a potent, time-dependent inhibitor of human placental aromatase, and its thio (4b), amino (5), and methylene (14) analogs are descibed.The key step in the construction of 4a, 4b, and 5 is
