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1,3-dimethyl-7-p-tolyl-1H-thiazolo[2,3-f]purine-2,4-dione is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

57445-21-3

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57445-21-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 57445-21-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,4,4 and 5 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 57445-21:
(7*5)+(6*7)+(5*4)+(4*4)+(3*5)+(2*2)+(1*1)=133
133 % 10 = 3
So 57445-21-3 is a valid CAS Registry Number.

57445-21-3Downstream Products

57445-21-3Relevant academic research and scientific papers

ELECTROPHILIC AND NUCLEOPHILIC SUBSTITUTION IN OXAZOLOXANTHINES

Garmash, S. N.,Skul'skaya, E. A.,Priimenko, B. A.,Klyuev, N. A.

, p. 1164 - 1167 (2007/10/02)

Bromination of 2-aryloxazoloxanthines gives the 3-bromoderivatives whereas 8-methyl-2-phenyloxazoloxanthine is nitrated in the para-position of the phenyl substituent.Alkylation of oxazoloxanthines by ethylmonoiodoacetate gives the ethyl esters of oxazoloxanthinyl-6-acetic acids.Reaction of oxazoloxanthines with sodium sulfide gives thiazoloxanthines whereas the reaction with secondary amines opens the oxazole ring.

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