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22347-28-0

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22347-28-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 22347-28-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,2,3,4 and 7 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 22347-28:
(7*2)+(6*2)+(5*3)+(4*4)+(3*7)+(2*2)+(1*8)=90
90 % 10 = 0
So 22347-28-0 is a valid CAS Registry Number.

22347-28-0Relevant articles and documents

Reactions of dimethyl 2-chloroethynylphosphonate with 1-substituted 5-oxo-1H-1,2,3,4-tetrazoles

Mel'nikova,Myznikov,Dogadina,Svintsitskaya

, p. 2160 - 2166 (2015/02/02)

Addition of 1-substituted tetrazol-5-ones to dimethyl 2-chloroethynylphosphonate occurred regioselectively to form new geminally substituted bis(4-R-5-oxo-4,5-dihydro-1H-tetrazol-1-yl)ethenylphosphonates with 65- 92% yield.

Preparation of some 1,2,3,4-tetrazoles

Cowper,Astik,Thaker

, p. 1087 - 1088 (2007/10/02)

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