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66849-33-0

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66849-33-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 66849-33-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,6,8,4 and 9 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 66849-33:
(7*6)+(6*6)+(5*8)+(4*4)+(3*9)+(2*3)+(1*3)=170
170 % 10 = 0
So 66849-33-0 is a valid CAS Registry Number.

66849-33-0Upstream product

66849-33-0Downstream Products

66849-33-0Relevant articles and documents

Process for the preparation of oxazaphosphorine-2-amines

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, (2008/06/13)

A process for the preparation of oxazaphosphorine-2-amines of the formula (I) described by the reaction scheme in which R1 is H, 2-bromoethyl, 2-chloroethyl, 2-hydroxyethyl, 2-mesyloxyethyl or 1-phenylethyl; R2 is H or 2-chloroethyl; R3 is H, 2-bromoethyl, 2-chloroethyl or 1-phenylethyl; and R4 is H; or R1 and R2, and also R3 and R4, together with the linked N atom, form an aziridide ring, where R1, R2 and R3 are not simultaneously H, and R1 and R3 are not simultaneously 1-phenylethyl; and Y, which is optionally present, is hydrogen chloride or hydrogen bromide. The reaction is carried out in a single vessel with phosphoryl chloride and an auxiliary base as an acid-binding agent with minimization of the effect of water and without isolation of an intermediate compound.

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