CAS DataBase Reference: Poly(oxy-1,4-butanediyl), .alpha.-hydro-.omega.-hydroxy-, polymer with 2,4-diisocyanato-1-methylbenzene(CAS DataBase Reference)
NIST Chemistry Reference: Poly(oxy-1,4-butanediyl), .alpha.-hydro-.omega.-hydroxy-, polymer with 2,4-diisocyanato-1-methylbenzene(9050-83-3)
EPA Substance Registry System: Poly(oxy-1,4-butanediyl), .alpha.-hydro-.omega.-hydroxy-, polymer with 2,4-diisocyanato-1-methylbenzene(9050-83-3)
The CAS Registry Mumber 9050-83-3 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 9,0,5 and 0 respectively; the second part has 2 digits, 8 and 3 respectively. Calculate Digit Verification of CAS Registry Number 9050-83: (6*9)+(5*0)+(4*5)+(3*0)+(2*8)+(1*3)=93 93 % 10 = 3 So 9050-83-3 is a valid CAS Registry Number.
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