105052-39-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 105052-39-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,5,0,5 and 2 respectively; the second part has 2 digits, 3 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 105052-39:
(8*1)+(7*0)+(6*5)+(5*0)+(4*5)+(3*2)+(2*3)+(1*9)=79
79 % 10 = 9
So 105052-39-9 is a valid CAS Registry Number.
InChI:InChI=1/C13H9NO4/c1-17-10-6-5-8-7-12(14(15)16)18-11-4-2-3-9(10)13(8)11/h2-7H,1H3
105052-39-9Relevant articles and documents
Synthese d'oxaphenalenes substitues en position 2 par un groupement electro-attractif
Buisson, Jean-Pierre,Royer, Rene
, p. 539 - 542 (2007/10/02)
Up to now, little is known about naphthopyran (oxaphenalene) derivatives, although some of them have been detected in the vegetable kingdom.However, very recently , 2-nitronaphthopyran and 6-methoxy-2-nitronaphthopyran proved to