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28910-95-4

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28910-95-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 28910-95-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,8,9,1 and 0 respectively; the second part has 2 digits, 9 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 28910-95:
(7*2)+(6*8)+(5*9)+(4*1)+(3*0)+(2*9)+(1*5)=134
134 % 10 = 4
So 28910-95-4 is a valid CAS Registry Number.

28910-95-4Downstream Products

28910-95-4Relevant articles and documents

Electrochemical synthesis of 1,2,4-triazole-fused heterocycles

Ye, Zenghui,Ding, Mingruo,Wu, Yanqi,Li, Yong,Hua, Wenkai,Zhang, Fengzhi

, p. 1732 - 1737 (2018/04/30)

A reagent-free intramolecular dehydrogenative C-N cross-coupling reaction has been developed under mild electrolytic conditions. In this atom- and step-economical one-pot process, valuable 1,2,4-triazolo[4,3-a]pyridines and related heterocyclic compounds could be synthesized efficiently from commercially available aliphatic or (hetero)aromatic aldehydes and 2-hydrazinopyridines. Various functional groups are compatible with this metal- and oxidant-free protocol which can be carried out on a gram scale easily. This novel method was applied to the synthesis of one of the top-selling drugs Xanax and late stage functionalization for generating chemical diversity in biologically relevant lead molecules.

6-Phenyl-4H-s-triazolo[4,3-a][1,4]benzodiazepines

-

, (2008/06/13)

6-Phenyl-4H-s-triazolo[4,3-a][1,4]benzodiazepines of the formula (IV): SPC1 wherein R is selected from the group consisting of hydrogen, alkyl of 1 to 3 carbon atoms, inclusive, phenyl, benzyl and -COOR' in which R' is alkyl of 1 to 4 carbon atoms, inclusive; wherein R1 is selected from the group consisting of hydrogen and alkyl of 1 to 3 carbon atoms, inclusive; and wherein R2, R3, R4 and R5 are selected from the group consisting of hydrogen, alkyl of 1 to 3 carbon atoms, inclusive, halogen, nitro, cyano, trifluoromethyl, and alkoxy, alkylthio, alkylsulfinyl, alkylsulfonyl, alkanoylamino and dialkylamino in which the carbon chain moieties are of 1 to 3 carbon atoms, inclusive, are produced by condensing a 1,3-dihydro-5-phenyl-2H-1,4-benzodiazepine-2-thione of the formula (I): SPC2 wherein R1, R2, R3, R4 and R5 are defined as above, with an organic acid hydrazide of the formula: EQU1 wherein R is defined as above. The new products of formula IV including their pharmacologically acceptable acid addition salts are useful as sedatives, tranquilizers and muscle relaxants in mammals and birds.

6-phenyl-4H-s-triazolo[4,3-a][1,4]benzodiazepines which have central nervous system depressant activity.

Hester Jr.,Rudzik,Kamdar

, p. 1078 - 1081 (2007/10/05)

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