The CAS Registry Mumber 21020-64-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,0,2 and 0 respectively; the second part has 2 digits, 6 and 4 respectively. Calculate Digit Verification of CAS Registry Number 21020-64: (7*2)+(6*1)+(5*0)+(4*2)+(3*0)+(2*6)+(1*4)=44 44 % 10 = 4 So 21020-64-4 is a valid CAS Registry Number.
21020-64-4Upstream product
21020-64-4Downstream Products
21020-64-4Relevant articles and documents
Elimination of the 4-hydroxyl group of the alkaloids related to morphine. XI. Synthesis of (minus)-14 hydroxy-3-methoxy-N-methylmorphinan derivatives.
Sawa,Tada
, p. 6185 - 6196 (1968)
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