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134832-67-0

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134832-67-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 134832-67-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,4,8,3 and 2 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 134832-67:
(8*1)+(7*3)+(6*4)+(5*8)+(4*3)+(3*2)+(2*6)+(1*7)=130
130 % 10 = 0
So 134832-67-0 is a valid CAS Registry Number.

134832-67-0Relevant articles and documents

Carbon oxysulphide: A novel reagent for the synthesis of 4-amino/anilino-3-aryl/aryloxymethyl/thiophenoxymethyl-1,2,4-triazolin-5-ones and 5-arylamino-2-mercapto-1,3,4-oxadiazoles

Chande, Madhukar S.,Singh-Jathar, Kiron

, p. 352 - 357 (2007/10/03)

Acid hydrazides 1 on reaction with carbon oxysulphide in the presence of alcoholic KOH afford potassium β-acylthiocarbazinates 2 which on further reaction with hydrazine hydrate or phenylhydrazine give 4-amino-3-substituted-1,2,4-triazolin-5-ones 3 and 4-amilino-3-substituted-1,2,4-triazolin-5-ones 5 respectively. 4-Substituted thiosemicarbazides 6 on treatment with carbon oxysulphide in the presence of ale NaOH afford sodium β-(N-arylthiocarbamyl)thiocarbazinates 7 which on cyclisation in the presence of ethanolic NaOH afford 5-arylamino-2-mercapto-1,3,4-oxadiazoles 8. On reaction with benzyl chloride in the presence of NaOH 8 isomerise to 3-benzylmercapto-4-substituted-1,2,4-triazolin-5-ones 9.

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