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49616-03-7

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49616-03-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 49616-03-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,9,6,1 and 6 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 49616-03:
(7*4)+(6*9)+(5*6)+(4*1)+(3*6)+(2*0)+(1*3)=137
137 % 10 = 7
So 49616-03-7 is a valid CAS Registry Number.

49616-03-7Upstream product

49616-03-7Relevant articles and documents

SYNTHESIS AND REACTIONS OF 2,4-DISUBSTITUTED BENZOFURANO-, BENZOTHIENO- AND INDOLO-1,3-OXAZINIUM SALTS

Tolkunov, S. V.,Voshchula, V. N.,Zemskaya, E. A.,Dulenko, V. I.

, p. 1310 - 1312 (1990)

Under acid catalyzed acylation 3-acetamidobenzofuran, -benzothiophene, and -indole undergo heterocyclization to condensed 1,3-oxazinium salts.Treatment of the salts with ammonium acetate in acetic acid gives the corresponding benzofurano- and ben

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