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149249-72-9

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149249-72-9 Usage

Uses

(4R)-Dorzolamide is an impurity of Dorzolamide (D535100, HCl salt), a carbonic anhydrase inhibitor.

Check Digit Verification of cas no

The CAS Registry Mumber 149249-72-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,9,2,4 and 9 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 149249-72:
(8*1)+(7*4)+(6*9)+(5*2)+(4*4)+(3*9)+(2*7)+(1*2)=159
159 % 10 = 9
So 149249-72-9 is a valid CAS Registry Number.
InChI:InChI=1/C10H18N2O4S3/c1-3-12-8-4-6(2)18(13,14)10-7(8)5-9(17-10)19(11,15)16/h5-8,10,12H,3-4H2,1-2H3,(H2,11,15,16)/t6-,7?,8-,10?/m0/s1

149249-72-9SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 17, 2017

Revision Date: Aug 17, 2017

1.Identification

1.1 GHS Product identifier

Product name 5,6-dihydro-(s)-4-(ethylamino)-(s)-6-methyl-4h-thieno[2,3-b]thiopyran-2-sulfonamide 7,7-dioxide

1.2 Other means of identification

Product number -
Other names 5,6-dihydro-4-ethylamino-6-methyl-4H-thieno[2,3-b]thiopyran-2-sulfonamide-7,7-dioxide

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:149249-72-9 SDS

149249-72-9Relevant articles and documents

Synthetic process of dorzolamide Hydrochloride intermediate

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Paragraph 0036; 0053; 0066-0075, (2020/06/20)

The invention discloses a synthetic process of a dorzolamide Hydrochloride intermediate. According to the invention, mild zinc borohydride is adopted as a reducing agent; raw material compounds IIa 4-acetamido-5, 6-dihydro-6-methyl-4H-thieno [2, 3-b] thiopyran-2-sulfonamide-7, 7-dioxide and IIb ((4S, 6S)-4-acetamido-5, 6-dihydro-6-methyl-4H-thieno [2, 3-b] thiopyran-2-sulfonamide-7, 7-dioxide) arereduced at the temperature of 60-120 DEG C, acetamido is reduced into ethylamino, usage of a reducing agent which is highly toxic and high in operation danger coefficient is avoided, the whole reaction is easier to control, and the whole reaction process is milder and more environmentally friendly.

Process for preparing 5,6-dihydro-4-(S)-(ethylamino)-6-(S) methyl-4H-thieno[2,3b]thiopyran-2-sulphonamide-7,7-dioxide HCI

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Page/Page column 9, (2008/06/13)

The present invention relates to an improved process for the preparation of 5,6-dihydro-4-(S)-(ethylamino)-6-(S)methyl-4H-thieno[2,3b]thiopyran-2-sulphonamide-7,7-dioxide hydrochloride of formula (I) commonly known as Dorzolamide Hydrochloride useful as an agent to reduce intraoccular pressure by inhibiting carbonic anhydrase enzyme

AN IMPROVED PROCESS FOR THE PREPARATION OF 5,6 -DIHYDRO -4H-4(S)-ETHYLAMINO-6(S)-METHYLTHIENO[2,3-b] THIOPYRAN-2-SULFONAMIDE- 7,7 -DIOXIDE AND ITS SALT

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Page/Page column 7-8, (2008/06/13)

The present invention relates to resolution of (cis, trans) 5,6 -dihydro -4H-4-ethylamino-6-methylthieno[2,3-b] thiopyran-2-sulfonamide-7,7 -dioxide using dibenzoyl -L- tartaric acid monohydrate or di-p-toluoyl-L-tarrtaric acid monohydrate as a chiral resolving agent in presence of methanol to obtain hemitartarate salt, purifying it to obtain hemitartarate salt of 5,6-dihydro-4 H-4 (S) -ethyl amino-6(S) methylthieno [2,3-b] thiopyran-2-sulfonamide - 7,7 -dioxide with de of >99% , Chemical purity >99.5% with cis isomer content of 0.1 % and further converting into its pharmaceutically acceptable salts, preferably hydrochloride salt.

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