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191337-78-7

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191337-78-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 191337-78-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,1,3,3 and 7 respectively; the second part has 2 digits, 7 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 191337-78:
(8*1)+(7*9)+(6*1)+(5*3)+(4*3)+(3*7)+(2*7)+(1*8)=147
147 % 10 = 7
So 191337-78-7 is a valid CAS Registry Number.

191337-78-7Downstream Products

191337-78-7Relevant articles and documents

Convenient synthesis of 6-substituted-2-chloro-5,12-dihydro-5-oxobenzoxazolo[3,2-a]quinolines and N-acylated-3-chlorodibenz[b,e][1,4]oxazepin-11(5H)-ones

Chung, Sang J.,Joo, Keum Chan,Kim, Dong H.

, p. 485 - 488 (2007/10/03)

Convenient synthesis of variously substituted 2-chloro-5,12-dihydro-5-oxobenzoxazolo[3,2-a]quinolines at the 6-position and N-acylated-3-chlorodibenz[b,e][1,4]oxazepin-11(5H)-ones are reported. The former compounds were obtained in 65-93% yield by simply heating N-acyl-4-chloro-N-(2-hydroxyphenyl)anthranilic acids in acetic anhydride for 4 hours, and the latter by heating sodium salt of N-acyl-4-chloro-N-(2-hydroxyphenyl)anthranilic acids with acetic anhydride.

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