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139540-03-7

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139540-03-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 139540-03-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,5,4 and 0 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 139540-03:
(8*1)+(7*3)+(6*9)+(5*5)+(4*4)+(3*0)+(2*0)+(1*3)=127
127 % 10 = 7
So 139540-03-7 is a valid CAS Registry Number.

139540-03-7Downstream Products

139540-03-7Relevant articles and documents

Synthesis of some new fluorine containing bioactive heterocycles derived from fluorinated isatins and evaluation of their antibacterial activity

Joshi, Krishna C,Dandia, Anshu,Khanna, Sangeeta

, p. 105 - 108 (2007/10/02)

Some of fluorine containing indolotriazino(3,2-b>quinazolin-14(7H)ones (IV), 2-(2-aminophenyl)-3H-triazinoquinazoline-3,10(4H)-diones (V) and spirotriazoloquinazoline>-2,9'(1H,3'H)-diones (VI) have been synthesized by the reaction of fluorinated isatin derivatives (1a-c) with 2,3-diamino-4(3H)-quinazolone (II) in ethanolic KOH.The schiff base 2-amino-3-(1,2-dihydro-2-oxo-3H-indol-3-ylideneamino)-4(3H)-quinazolinone (IIIa) has been isolated only in the case of reaction with 5-fluoroisatin (Ia)in gl. acetic acid.All the compounds synthesized have been characterized by their analytical and spectral (IR, 1HNMR, 19FNMR and Mass) data.

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