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173277-45-7

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173277-45-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 173277-45-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,3,2,7 and 7 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 173277-45:
(8*1)+(7*7)+(6*3)+(5*2)+(4*7)+(3*7)+(2*4)+(1*5)=147
147 % 10 = 7
So 173277-45-7 is a valid CAS Registry Number.

173277-45-7Downstream Products

173277-45-7Relevant articles and documents

Synthetic Routes to 1,5-Dihydro-5-oxo-4,1-benzoxazepines and to 5-Oxooxazoloquinolines

Gandhi, Sham S.,Bell, Karen L.,Gibson, Martin S.

, p. 13301 - 13308 (1995)

The literature concerning phenacyl anthranilate, N-phenacylanthranilic acid and phenacyl N-phenacylanthranilate is clarified.Phenacyl anthranilate is dehydrated to 1,5-dihydro-5-oxo-2-phenyl-4,1-benzoxazepine by treatment with phosphoryl chloride; other examples of this reaction are described.A preparation of 4-methyl-5-oxo-2-phenyloxazoloquinoline from N-phenacylanthranilic acid and propionic anhydride is reported.

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