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7,9-Dimethyl-3-phenyl-3H-pyrido[3',2':4,5]thieno[3,2-d][1,2,3]triazin-4-one is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

128991-46-8

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128991-46-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 128991-46-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,9,9 and 1 respectively; the second part has 2 digits, 4 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 128991-46:
(8*1)+(7*2)+(6*8)+(5*9)+(4*9)+(3*1)+(2*4)+(1*6)=168
168 % 10 = 8
So 128991-46-8 is a valid CAS Registry Number.

128991-46-8Downstream Products

128991-46-8Relevant academic research and scientific papers

SYNTHESIS AND REACTIONS OF SOME THIENOPYRIDINE DERIVATIVES

Hassan, Kh. M.,El-Dean, A. M. Kamal,Youssef, M. S. K.,Atta, F. M.,Abbady, M. S.

, p. 181 - 189 (2007/10/02)

Substituted thienopyridines (VIII-XII) were prepared by ring closure of the corresponding S-alkylated derivatives (II-VI).Thienopyridine-2-carbohydrazide XIII was interacted with some reagents afforded the expected pyridothienopyrimidines (XIV-XVI).Also, the carboazide XVII undergo Curtius rearrangement giving imidazolothienopyridine (XVIII).The carboxamide derivatives (X-XII) interacted with CS2 giving pyridothienopyrimidines (XX-XXII), while interaction with nitrous acid, pyridothienotriazines (XXIII-XXV) were produced.

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