344920-47-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 344920-47-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,4,4,9,2 and 0 respectively; the second part has 2 digits, 4 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 344920-47:
(8*3)+(7*4)+(6*4)+(5*9)+(4*2)+(3*0)+(2*4)+(1*7)=144
144 % 10 = 4
So 344920-47-4 is a valid CAS Registry Number.
344920-47-4Relevant articles and documents
PROCESS FOR PRODUCING ISOCYANATES
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Page/Page column 22-23, (2011/11/01)
The invention relates a process for producing isocyanates comprising the steps of a) providing an azolide and optionally a solvent, and b) adding an acid at a temperature below about 40C. The invention also relates to the isocyanate obtainable by such a process.