178878-33-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 178878-33-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,8,8,7 and 8 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 178878-33:
(8*1)+(7*7)+(6*8)+(5*8)+(4*7)+(3*8)+(2*3)+(1*3)=206
206 % 10 = 6
So 178878-33-6 is a valid CAS Registry Number.
178878-33-6Relevant articles and documents
A novel method for the preparation of fluoroaryl- and fluoroalkyl-substituted bis- and tris-phosphonic acids
Classen,Haegele
, p. 71 - 81 (2007/10/03)
The formation of various aromatic fluorinated vinylphosphonates, geminal and vicinal bisphosphonates and trisphosphonates by the Wittig-Horner-Emmons reaction and Michael addition is presented. The regiospecific direction of Michael addition under basic c
