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445234-92-4

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445234-92-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 445234-92-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,4,5,2,3 and 4 respectively; the second part has 2 digits, 9 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 445234-92:
(8*4)+(7*4)+(6*5)+(5*2)+(4*3)+(3*4)+(2*9)+(1*2)=144
144 % 10 = 4
So 445234-92-4 is a valid CAS Registry Number.

445234-92-4Relevant articles and documents

Simple and facile tetrahydropyranylation of alcohols by use of catalytic amounts of benzyltriphenylphosphonium tribromide

Hajipour,Pourmousavi,Ruoho

, p. 2889 - 2894 (2005)

An efficient and mild system for protection of a variety of alcohols with 3,4-dihydro-2H-pyran (DHP) in the presence of catalytic amounts of benzyltriphenyl-phosphonium tribromide (BTPTB) (1) gives the corresponding tetrahydropyan ethers (ROTHP) in dichloromethane. The experimental procedure is simple, and the products are straightforwardly isolated in high to excellent yields. Copyright Taylor & Francis, Inc.

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