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81677-09-0

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81677-09-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81677-09-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,6,7 and 7 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 81677-09:
(7*8)+(6*1)+(5*6)+(4*7)+(3*7)+(2*0)+(1*9)=150
150 % 10 = 0
So 81677-09-0 is a valid CAS Registry Number.

81677-09-0Relevant articles and documents

Synthesis of substituted five- and six-membered nitrogen heterocycles from 1-chloro-2-azapropenylium and 1-chloro-2,4-diazabutenylium salts

Okide, George B.

, p. 422 - 426 (2007/10/02)

Substituted pyrimidine, 1,2,4-triazole and 1,2,4-oxadiazole have been synthesized from various tertiary amides.The secondary amides give 1,3,5-triazinium perchlorates via, in most cases isolable acyclic triazahexadienylium intermediates.

REACTION OF 3-AZIDO-5-PHENYL-1,2,4-OXADIAZOLE WITH DIMETHYLFORMAMIDE, A NEW DEOXYGENATIVE COUPLING REACTION

Choi, P.,Rees, C.W.,Smith, E.H.

, p. 125 - 128 (2007/10/02)

When 3-bromo-5-phenyl-1,2,4-oxadiazole is heated with sodium azide in anhydrous dimethylformamide at 130 deg C, 3-dimethylamino and 3-dimethylaminomethyleneamino-5-phenyl-1,2,4-oxadiazole are formed, the latter by a new deoxygenative coupling of the azide

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