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1233855-18-9

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1233855-18-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1233855-18-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,3,3,8,5 and 5 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 1233855-18:
(9*1)+(8*2)+(7*3)+(6*3)+(5*8)+(4*5)+(3*5)+(2*1)+(1*8)=149
149 % 10 = 9
So 1233855-18-9 is a valid CAS Registry Number.

1233855-18-9Relevant articles and documents

PROCESSES FOR THE SYNTHESIS OF SUBSTITUTED UREA COMPOUNDS

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, (2015/10/05)

The present invention concerns a process for preparing a compound having the Formula A; or a pharmaceutically acceptable salt or derivative thereof, or for preparing a substituted urea compound of Formula IIa, or a pharmaceutically acceptable salt or ester thereof, (Formula IIa) the process comprising the reaction of an imidazolyl intermediate of Formula IIa', with a carbamoyl halide of the formula: R1R2NC(=O)Hal, wherein Hal represents Cl, F, I or Br, wherein the intermediate of Formula IIa' is prepared by oxidation of the derivative of R5 and R6, R6-C(=O)CH2R5 to form a glyoxal intermediate R6-C(=O)(C=O)R5, which is subjected to treatment with ammonium hydroxide and an aldehyde R8CHO to provide the intermediate of Formula IIa', and wherein the compound substituents are as defined herein.

PROCESS FOR THE SYNTHESIS OF SUBSTITUTED UREA COMPOUNDS

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Page/Page column 57-58, (2012/02/13)

A process for preparing a substitute urea of Formula (II) or Formula (I), or a pharmaceutically acceptable salt or ester thereof, Formula (II): Formula (I): the process comprising the reaction of a carbamate of Formula (II'): or formula (I'): with a prima

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