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128316-74-5

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128316-74-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 128316-74-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,3,1 and 6 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 128316-74:
(8*1)+(7*2)+(6*8)+(5*3)+(4*1)+(3*6)+(2*7)+(1*4)=125
125 % 10 = 5
So 128316-74-5 is a valid CAS Registry Number.

128316-74-5Downstream Products

128316-74-5Relevant articles and documents

EFFICIENT SYNTHESIS OF 1,2-seco AND 1,2-seco 2-nor PYRIMIDINE AND PURINE NUCLEOSIDES.

Azymah, Muhammad,Chavis, Claude,Lucas, Marc,Imbach, Jean-Louis

, p. 6165 - 6168 (1989)

Unprotected sylilated purines and pyrimidines (adenine, guanine, cytosine, thymine) reacted with acetoxymethyl ether (acyclic sugar analogues) under solid PTC conditions, using KI and dibenzo-18-crown-6 in benzene-acetonitrile(1:1, v/v) to give regiospecifically the corresponding N-9 purine and N-1 pyrimidine acyclic nucleosides in fairly good yields.

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