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81878-17-3

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81878-17-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81878-17-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,8,7 and 8 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 81878-17:
(7*8)+(6*1)+(5*8)+(4*7)+(3*8)+(2*1)+(1*7)=163
163 % 10 = 3
So 81878-17-3 is a valid CAS Registry Number.

81878-17-3Downstream Products

81878-17-3Relevant articles and documents

NOVEL HETEROCYCLIC SYSTEMS. PART 7. NEW SPECIES CONTAINING TWO PYRIDINE RINGS BY DEHYDRATION OF 3-HYDROXY-2(1H)-PYRIDONE USING PHOSPHORUS PENTOXIDE.

Matthews, Ian,Smith, Keith,Turner, John R.,Martin, Gary E.

, p. 101 - 105 (2007/10/02)

Dimeric dehydration products of 3-hydroxy-2(1H)-pyridone (1) are obtained by melting a mixture of (1) and P2O5 at 250-290 deg C.The major product is 3-hydroxy-1-(3-hydroxy-2-pyridyl)-2(1H)-pyridone (7).Also obtained are 1,6-diazaphenodioxin (5) and a novel betaine, 6-oxidodipyridooxazolium (6).

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