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1009809-16-8

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1009809-16-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1009809-16-8 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,0,9,8,0 and 9 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 1009809-16:
(9*1)+(8*0)+(7*0)+(6*9)+(5*8)+(4*0)+(3*9)+(2*1)+(1*6)=138
138 % 10 = 8
So 1009809-16-8 is a valid CAS Registry Number.

1009809-16-8Downstream Products

1009809-16-8Relevant articles and documents

Preparation method of iopromide

-

, (2019/08/01)

The invention belongs to the technical field of chemical synthesis, and particularly relates to a preparation method of iopromide. The method comprises the following steps: (1) chloridizing 5-methylaminoisophthalic acid monomethyl ester as shown in a formula II and used as a raw material to obtain 3-amino-5-chloroformylbenzoate as shown in a formula III; (2) enabling reaction between the compoundas shown in the formula III and methoxyacetyl chloride to obtain 3-chloroformyl 5-[methoxyacetyl)amino)]-methyl benzoate as shown in a formula IV; (3) enabling reaction between the compound as shown in the formula IV and 3-aminopropanediol to obtain 3-[(2,3-dihydroxypropylaminoformyl)-5-[(methoxyacetyl)amino]-methyl benzoate as shown in a formula V; (4) enabling reaction between the compound as shown in the formula V and 3-methylamino propanediol to obtain N,N'-di(2,3-dihydroxyl)-5-[(methoxyacetyl)amino)]-N-methyl-1,3-phthalamide as shown in a formula VI; and (5) enabling reaction between thecompound as shown in the formula VI and NaICl2 to obtain the iopromide. The preparation method of the iopromide provided by the invention is low in production cost, high in reproducibility and high inyield.

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