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89330-82-5

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89330-82-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 89330-82-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,9,3,3 and 0 respectively; the second part has 2 digits, 8 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 89330-82:
(7*8)+(6*9)+(5*3)+(4*3)+(3*0)+(2*8)+(1*2)=155
155 % 10 = 5
So 89330-82-5 is a valid CAS Registry Number.

89330-82-5Relevant articles and documents

AN UNEXPECTED ISOMERISATION OF 1,4-DIARYLOXY-2-BUTYNES TO Z,Z-1,4-DIARYLOXY-1,3-BUTADIENES-POTENTIAL DIENES FOR DIELS-ALDER REACTION

Ramakanth, S.,Narayanan, K.,Balasubramanian, K.K.

, p. 103 - 104 (1984)

1,4-Diaryloxy-2-butynes 1 were converted to 1,4-diaryloxy-z,z-1,3-butadienes 2 in refluxing HMPA in presence of potassium carbonate.

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