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32551-87-4

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32551-87-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 32551-87-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,2,5,5 and 1 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 32551-87:
(7*3)+(6*2)+(5*5)+(4*5)+(3*1)+(2*8)+(1*7)=104
104 % 10 = 4
So 32551-87-4 is a valid CAS Registry Number.

32551-87-4Relevant articles and documents

Alkylation Reactions by Means of Alkanols and Carbon Monoxide: An Efficient Synthesis of Thioethers and of Caffeine from Theophylline

Bott, Kaspar

, p. 1955 - 1956 (2007/10/02)

The reaction of sodium or potassium thiolates with alkanols and carbon monoxide provides a versatile route to produce thioethers in excellent yields.By analogy, the potassium salt of theophylline suffers a nearly quantitative conversion to caffeine when heated with methanol under CO pressure.The mechanism of these alkylation reactions is discussed. - Key Words: Nucleophilic alkylation / Thioethers / Caffeine / Carbon monoxide / Alkanols

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