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209050-04-4

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209050-04-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 209050-04-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,9,0,5 and 0 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 209050-04:
(8*2)+(7*0)+(6*9)+(5*0)+(4*5)+(3*0)+(2*0)+(1*4)=94
94 % 10 = 4
So 209050-04-4 is a valid CAS Registry Number.

209050-04-4Downstream Products

209050-04-4Relevant articles and documents

Preparation and properties of 2-dialkylamino-5-haloacetyl-thiazoles and 4-(2-dialkylamino-5-thiazolyl)-thiazoles

Mokry, Cornelia,Hartmann, Horst

, p. 375 - 380 (2007/10/03)

By the reaction of N-acylthioureas 7 with 1,3-dichloroacetone9 2-dialkylamino-5-chloroacetyl-thiazoles 11 are avialable. These compounds react with thioureas or arylthioamides under heterocyclisation to give bis-(2-dialkylamino-5-thiazolyl)-ketones 13, 2-aryl-4-(2-dialkylamino-5-thiazolyl)-thiazoles 14, or 2-dialkylamino-4-(2-dialkylamino-5-thiazolyl)-thiazoles 15, resp., from which the last-mentioned compound exhibit a high reactivity towards several electrophilic reagents. Thus, deeply colored cyanovinyl, arylazo, and arylmethine substituted bisthiazole dyes 17, 18, and 19, resp., have been formed. Johann Ambrosius Barth 1998.

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