219811-94-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 219811-94-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,9,8,1 and 1 respectively; the second part has 2 digits, 9 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 219811-94:
(8*2)+(7*1)+(6*9)+(5*8)+(4*1)+(3*1)+(2*9)+(1*4)=146
146 % 10 = 6
So 219811-94-6 is a valid CAS Registry Number.
219811-94-6Relevant articles and documents
Synthesis of isoprene from formaldehyde and isobutene over phosphate catalysts
Sushkevich,Ordomsky,Ivanova
, p. 21 - 29 (2012)
Vapor phase Prins condensation of isobutene with formaldehyde has been studied over boron (BP), aluminum (AlP), titanium (TiP), zirconium (ZrP) and niobium (NbP) phosphates. The catalysts were characterized by elemental analysis, X-ray diffraction, low-te
