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74877-28-4

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74877-28-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 74877-28-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,4,8,7 and 7 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 74877-28:
(7*7)+(6*4)+(5*8)+(4*7)+(3*7)+(2*2)+(1*8)=174
174 % 10 = 4
So 74877-28-4 is a valid CAS Registry Number.

74877-28-4Relevant articles and documents

Regiochemical Control of the Addition of Aryl Selenols and Aryl Thiols to the Triple Bond of Arylpropiolates. Synthesis of Seleno- and Thioflavones and Seleno- and Thioaurones

Wadsworth, Donald H.,Detty, Michael R.

, p. 4611 - 4615 (2007/10/02)

Addition of aryl selenols and aryl thiols to arylpropiolates under basic conditions followed by saponification gave exclusively β-substituted cinnamates of predominant Z sterochemistry.Neat solutions of aryl selenols or aryl thiols and arylpropiolates aft

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