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156578-29-9

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156578-29-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 156578-29-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,6,5,7 and 8 respectively; the second part has 2 digits, 2 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 156578-29:
(8*1)+(7*5)+(6*6)+(5*5)+(4*7)+(3*8)+(2*2)+(1*9)=169
169 % 10 = 9
So 156578-29-9 is a valid CAS Registry Number.

156578-29-9Relevant articles and documents

The chemistry of novolac resins. Part 4. The strategic synthesis of model compounds.

De Bruyn, Pauline J.,Foo, Linda M.,Lim, Audrey S. C.,Looney, Mark G.,Solomon, David H.

, p. 13915 - 13932 (2007/10/03)

An ion assisted ortho-specific phenol-formaldehyde condensation process, incorporating selective protecting-deprotecting methodology has been adapted to prepare a range of model novolac compounds which are ideal for studying crosslinking with hexamethylenetetramine.

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