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1271735-71-7

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1271735-71-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1271735-71-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,7,1,7,3 and 5 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1271735-71:
(9*1)+(8*2)+(7*7)+(6*1)+(5*7)+(4*3)+(3*5)+(2*7)+(1*1)=157
157 % 10 = 7
So 1271735-71-7 is a valid CAS Registry Number.

1271735-71-7Downstream Products

1271735-71-7Relevant articles and documents

Cellulose sulfuric acid catalyzed multicomponent reaction for efficient synthesis of 1,4-dihydropyridines via unsymmetrical Hantzsch reaction in aqueous media

Safari, Javad,Banitaba, Sayed Hossein,Khalili, Shiva D.

experimental part, p. 46 - 50 (2011/04/12)

C5-unsubstituted 1,4-dihydropyridines were obtained in good to excellent yields by proceeding through a simple, mild and efficient procedure utilizing cellulose sulfuric acid (CSA) as a catalyst. The reaction work-up is very simple and catalyst

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